diff --git a/blackboard/bb_variable.cpp b/blackboard/bb_variable.cpp
index 9ab99ad..fac7d08 100644
--- a/blackboard/bb_variable.cpp
+++ b/blackboard/bb_variable.cpp
@@ -78,12 +78,16 @@ String BBVariable::get_hint_string() const {
 	return data->hint_string;
 }
 
-BBVariable BBVariable::duplicate() const {
+BBVariable BBVariable::duplicate(bool p_deep) const {
 	BBVariable var;
 	var.data->hint = data->hint;
 	var.data->hint_string = data->hint_string;
 	var.data->type = data->type;
-	var.data->value = data->value;
+	if (p_deep) {
+		var.data->value = data->value.duplicate(p_deep);
+	} else {
+		var.data->value = data->value;
+	}
 	var.data->binding_path = data->binding_path;
 	var.data->bound_object = data->bound_object;
 	var.data->bound_property = data->bound_property;
diff --git a/blackboard/bb_variable.h b/blackboard/bb_variable.h
index 02cdd30..3eab7ec 100644
--- a/blackboard/bb_variable.h
+++ b/blackboard/bb_variable.h
@@ -54,7 +54,7 @@ public:
 	void set_hint_string(const String &p_hint_string);
 	String get_hint_string() const;
 
-	BBVariable duplicate() const;
+	BBVariable duplicate(bool p_deep = false) const;
 
 	_FORCE_INLINE_ bool is_value_changed() const { return data->value_changed; }
 	_FORCE_INLINE_ void reset_value_changed() { data->value_changed = false; }
diff --git a/blackboard/blackboard_plan.cpp b/blackboard/blackboard_plan.cpp
index 25ddf9e..727e4c3 100644
--- a/blackboard/blackboard_plan.cpp
+++ b/blackboard/blackboard_plan.cpp
@@ -391,7 +391,7 @@ void BlackboardPlan::sync_with_base_plan() {
 inline void bb_add_var_dup_with_prefetch(const Ref<Blackboard> &p_blackboard, const StringName &p_name, const BBVariable &p_var, bool p_prefetch, Node *p_node) {
 	if (unlikely(p_prefetch && p_var.get_type() == Variant::NODE_PATH)) {
 		Node *n = p_node->get_node_or_null(p_var.get_value());
-		BBVariable var = p_var.duplicate();
+		BBVariable var = p_var.duplicate(true);
 		if (n != nullptr) {
 			var.set_value(n);
 		} else {
@@ -404,7 +404,7 @@ inline void bb_add_var_dup_with_prefetch(const Ref<Blackboard> &p_blackboard, co
 		}
 		p_blackboard->assign_var(p_name, var);
 	} else {
-		p_blackboard->assign_var(p_name, p_var.duplicate());
+		p_blackboard->assign_var(p_name, p_var.duplicate(true));
 	}
 }
 
diff --git a/bt/bt_player.cpp b/bt/bt_player.cpp
index 838baf7..2c66cd7 100644
--- a/bt/bt_player.cpp
+++ b/bt/bt_player.cpp
@@ -144,6 +144,7 @@ void BTPlayer::update(double p_delta) {
 }
 
 void BTPlayer::restart() {
+	ERR_FAIL_COND_MSG(tree_instance.is_null(), "BTPlayer: Restart failed - no valid tree instance. Make sure the BTPlayer has a valid behavior tree with a valid root task.");
 	tree_instance->abort();
 	set_active(true);
 }
diff --git a/bt/tasks/blackboard/bt_check_var.cpp b/bt/tasks/blackboard/bt_check_var.cpp
index 14962dc..98f092e 100644
--- a/bt/tasks/blackboard/bt_check_var.cpp
+++ b/bt/tasks/blackboard/bt_check_var.cpp
@@ -24,8 +24,9 @@ void BTCheckVar::set_check_type(LimboUtility::CheckType p_check_type) {
 void BTCheckVar::set_value(const Ref<BBVariant> &p_value) {
 	value = p_value;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && value.is_valid()) {
-		value->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && value.is_valid() &&
+			!value->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		value->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/blackboard/bt_set_var.cpp b/bt/tasks/blackboard/bt_set_var.cpp
index 4b44d1d..9b6bc77 100644
--- a/bt/tasks/blackboard/bt_set_var.cpp
+++ b/bt/tasks/blackboard/bt_set_var.cpp
@@ -48,8 +48,9 @@ void BTSetVar::set_variable(const StringName &p_variable) {
 void BTSetVar::set_value(const Ref<BBVariant> &p_value) {
 	value = p_value;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && value.is_valid()) {
-		value->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && value.is_valid() &&
+			!value->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		value->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/bt_task.cpp b/bt/tasks/bt_task.cpp
index 818999b..b4526ab 100644
--- a/bt/tasks/bt_task.cpp
+++ b/bt/tasks/bt_task.cpp
@@ -377,16 +377,21 @@ void BTTask::print_tree(int p_initial_tabs) {
 	}
 }
 
-#ifdef TOOLS_ENABLED
-
 Ref<BehaviorTree> BTTask::editor_get_behavior_tree() {
+#ifdef TOOLS_ENABLED
 	BTTask *task = this;
 	while (task->data.behavior_tree_id.is_null() && task->get_parent().is_valid()) {
 		task = task->data.parent;
 	}
 	return Object::cast_to<BehaviorTree>(ObjectDB::get_instance(task->data.behavior_tree_id));
+#else
+	ERR_PRINT("BTTask::editor_get_behavior_tree: Not available in release builds.");
+	return Ref<BehaviorTree>();
+#endif
 }
 
+#ifdef TOOLS_ENABLED
+
 void BTTask::editor_set_behavior_tree(const Ref<BehaviorTree> &p_bt) {
 	data.behavior_tree_id = p_bt->get_instance_id();
 }
@@ -414,9 +419,7 @@ void BTTask::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("print_tree", "initial_tabs"), &BTTask::print_tree, Variant(0));
 	ClassDB::bind_method(D_METHOD("get_task_name"), &BTTask::get_task_name);
 	ClassDB::bind_method(D_METHOD("abort"), &BTTask::abort);
-#ifdef TOOLS_ENABLED
 	ClassDB::bind_method(D_METHOD("editor_get_behavior_tree"), &BTTask::editor_get_behavior_tree);
-#endif // TOOLS_ENABLED
 
 	// Properties, setters and getters.
 	ClassDB::bind_method(D_METHOD("get_agent"), &BTTask::get_agent);
diff --git a/bt/tasks/bt_task.h b/bt/tasks/bt_task.h
index b571c27..37e9449 100644
--- a/bt/tasks/bt_task.h
+++ b/bt/tasks/bt_task.h
@@ -167,8 +167,8 @@ public:
 
 	void print_tree(int p_initial_tabs = 0);
 
-#ifdef TOOLS_ENABLED
 	Ref<BehaviorTree> editor_get_behavior_tree();
+#ifdef TOOLS_ENABLED
 	void editor_set_behavior_tree(const Ref<BehaviorTree> &p_bt);
 #endif
 
diff --git a/bt/tasks/scene/bt_await_animation.cpp b/bt/tasks/scene/bt_await_animation.cpp
index a511cdf..a2fe9cb 100644
--- a/bt/tasks/scene/bt_await_animation.cpp
+++ b/bt/tasks/scene/bt_await_animation.cpp
@@ -16,8 +16,9 @@
 void BTAwaitAnimation::set_animation_player(Ref<BBNode> p_animation_player) {
 	animation_player_param = p_animation_player;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid()) {
-		animation_player_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid() &&
+			!animation_player_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		animation_player_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/scene/bt_check_agent_property.cpp b/bt/tasks/scene/bt_check_agent_property.cpp
index 7ac0c4d..8d64d6d 100644
--- a/bt/tasks/scene/bt_check_agent_property.cpp
+++ b/bt/tasks/scene/bt_check_agent_property.cpp
@@ -24,8 +24,9 @@ void BTCheckAgentProperty::set_check_type(LimboUtility::CheckType p_check_type)
 void BTCheckAgentProperty::set_value(Ref<BBVariant> p_value) {
 	value = p_value;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && value.is_valid()) {
-		value->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && value.is_valid() &&
+			!value->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		value->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/scene/bt_pause_animation.cpp b/bt/tasks/scene/bt_pause_animation.cpp
index 4f1dd3c..71f88f1 100644
--- a/bt/tasks/scene/bt_pause_animation.cpp
+++ b/bt/tasks/scene/bt_pause_animation.cpp
@@ -16,8 +16,9 @@
 void BTPauseAnimation::set_animation_player(Ref<BBNode> p_animation_player) {
 	animation_player_param = p_animation_player;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid()) {
-		animation_player_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid() &&
+			!animation_player_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		animation_player_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/scene/bt_play_animation.cpp b/bt/tasks/scene/bt_play_animation.cpp
index f373e5f..c021401 100644
--- a/bt/tasks/scene/bt_play_animation.cpp
+++ b/bt/tasks/scene/bt_play_animation.cpp
@@ -16,8 +16,9 @@
 void BTPlayAnimation::set_animation_player(Ref<BBNode> p_animation_player) {
 	animation_player_param = p_animation_player;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid()) {
-		animation_player_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid() &&
+			!animation_player_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		animation_player_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/scene/bt_set_agent_property.cpp b/bt/tasks/scene/bt_set_agent_property.cpp
index 600e138..a182391 100644
--- a/bt/tasks/scene/bt_set_agent_property.cpp
+++ b/bt/tasks/scene/bt_set_agent_property.cpp
@@ -19,8 +19,9 @@ void BTSetAgentProperty::set_property(StringName p_prop) {
 void BTSetAgentProperty::set_value(Ref<BBVariant> p_value) {
 	value = p_value;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && value.is_valid()) {
-		value->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && value.is_valid() &&
+			!value->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		value->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/scene/bt_stop_animation.cpp b/bt/tasks/scene/bt_stop_animation.cpp
index 0bc247b..d64e079 100644
--- a/bt/tasks/scene/bt_stop_animation.cpp
+++ b/bt/tasks/scene/bt_stop_animation.cpp
@@ -16,8 +16,9 @@
 void BTStopAnimation::set_animation_player(Ref<BBNode> p_animation_player) {
 	animation_player_param = p_animation_player;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid()) {
-		animation_player_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && animation_player_param.is_valid() &&
+			!animation_player_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		animation_player_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/utility/bt_call_method.cpp b/bt/tasks/utility/bt_call_method.cpp
index f559d2e..0b46804 100644
--- a/bt/tasks/utility/bt_call_method.cpp
+++ b/bt/tasks/utility/bt_call_method.cpp
@@ -28,8 +28,9 @@ void BTCallMethod::set_method(const StringName &p_method_name) {
 void BTCallMethod::set_node_param(const Ref<BBNode> &p_object) {
 	node_param = p_object;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && node_param.is_valid()) {
-		node_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && node_param.is_valid() &&
+			!node_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		node_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/bt/tasks/utility/bt_evaluate_expression.cpp b/bt/tasks/utility/bt_evaluate_expression.cpp
index b6ab59b..33e453e 100644
--- a/bt/tasks/utility/bt_evaluate_expression.cpp
+++ b/bt/tasks/utility/bt_evaluate_expression.cpp
@@ -29,8 +29,9 @@ void BTEvaluateExpression::set_expression_string(const String &p_expression_stri
 void BTEvaluateExpression::set_node_param(Ref<BBNode> p_object) {
 	node_param = p_object;
 	emit_changed();
-	if (Engine::get_singleton()->is_editor_hint() && node_param.is_valid()) {
-		node_param->connect(LW_NAME(changed), Callable(this, LW_NAME(emit_changed)));
+	if (Engine::get_singleton()->is_editor_hint() && node_param.is_valid() &&
+			!node_param->is_connected(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed))) {
+		node_param->connect(LW_NAME(changed), callable_mp((Resource *)this, &Resource::emit_changed));
 	}
 }
 
diff --git a/editor/action_banner.cpp b/editor/action_banner.cpp
index b3764a1..199400e 100644
--- a/editor/action_banner.cpp
+++ b/editor/action_banner.cpp
@@ -41,7 +41,7 @@ void ActionBanner::close() {
 void ActionBanner::add_action(const String &p_name, const Callable &p_action, bool p_auto_close) {
 	Button *action_btn = memnew(Button);
 	action_btn->set_text(p_name);
-	action_btn->connect(LW_NAME(pressed), callable_mp(this, &ActionBanner::_execute_action).bind(p_action, p_auto_close));
+	action_btn->connect(LW_NAME(pressed), callable_mp(this, &ActionBanner::_execute_action).bind(p_action, p_auto_close), CONNECT_DEFERRED);
 	hbox->add_child(action_btn);
 }
 
diff --git a/editor/limbo_ai_editor_plugin.cpp b/editor/limbo_ai_editor_plugin.cpp
index 467af76..50a271b 100644
--- a/editor/limbo_ai_editor_plugin.cpp
+++ b/editor/limbo_ai_editor_plugin.cpp
@@ -220,6 +220,8 @@ void LimboAIEditor::_load_bt(String p_path) {
 void LimboAIEditor::_disable_editing() {
 	task_tree->unload();
 	task_palette->hide();
+	task_tree->hide();
+	usage_hint->show();
 }
 
 void LimboAIEditor::edit_bt(Ref<BehaviorTree> p_behavior_tree, bool p_force_refresh) {
@@ -234,14 +236,9 @@ void LimboAIEditor::edit_bt(Ref<BehaviorTree> p_behavior_tree, bool p_force_refr
 	p_behavior_tree->notify_property_list_changed();
 #endif // LIMBOAI_MODULE
 
-	if (task_tree->get_bt().is_valid() &&
-			task_tree->get_bt()->is_connected(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty).bind(true))) {
-		task_tree->get_bt()->disconnect(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty).bind(true));
-	}
-
 	task_tree->load_bt(p_behavior_tree);
 
-	if (task_tree->get_bt().is_valid()) {
+	if (task_tree->get_bt().is_valid() && !task_tree->get_bt()->is_connected(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty))) {
 		task_tree->get_bt()->connect(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty).bind(true));
 	}
 
@@ -888,6 +885,10 @@ void LimboAIEditor::_on_resources_reload(const PackedStringArray &p_resources) {
 #endif
 }
 
+void LimboAIEditor::_on_new_script_pressed() {
+	SCRIPT_EDITOR()->open_script_create_dialog("BTAction", String(GLOBAL_GET("limbo_ai/behavior_tree/user_task_dir_1")).path_join("new_task"));
+}
+
 void LimboAIEditor::_task_type_selected(const String &p_class_or_path) {
 	change_type_popup->hide();
 
@@ -958,6 +959,10 @@ void LimboAIEditor::_tab_clicked(int p_tab) {
 
 void LimboAIEditor::_tab_closed(int p_tab) {
 	ERR_FAIL_INDEX(p_tab, history.size());
+	Ref<BehaviorTree> history_bt = history[p_tab];
+	if (history_bt.is_valid() && history_bt->is_connected(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty))) {
+		history_bt->disconnect(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty));
+	}
 	history.remove_at(p_tab);
 	idx_history = MIN(idx_history, history.size() - 1);
 	if (idx_history < 0) {
@@ -1296,9 +1301,11 @@ void LimboAIEditor::_notification(int p_what) {
 			cf->set_value("bt_editor", "bteditor_hsplit", hsc->get_split_offset());
 			cf->save(conf_path);
 
-			if (task_tree->get_bt().is_valid() &&
-					task_tree->get_bt()->is_connected(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty).bind(true))) {
-				task_tree->get_bt()->disconnect(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty).bind(true));
+			task_tree->unload();
+			for (int i = 0; i < history.size(); i++) {
+				if (history[i]->is_connected(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty))) {
+					history[i]->disconnect(LW_NAME(changed), callable_mp(this, &LimboAIEditor::_mark_as_dirty));
+				}
 			}
 		} break;
 		case NOTIFICATION_READY: {
@@ -1329,7 +1336,7 @@ void LimboAIEditor::_notification(int p_what) {
 			disk_changed->connect("confirmed", callable_mp(this, &LimboAIEditor::_reload_modified));
 			disk_changed->connect("custom_action", callable_mp(this, &LimboAIEditor::_resave_modified));
 			rename_dialog->connect("confirmed", callable_mp(this, &LimboAIEditor::_rename_task_confirmed));
-			new_script_btn->connect(LW_NAME(pressed), callable_mp(SCRIPT_EDITOR(), &ScriptEditor::open_script_create_dialog).bind("BTAction", String(GLOBAL_GET("limbo_ai/behavior_tree/user_task_dir_1")).path_join("new_task")));
+			new_script_btn->connect(LW_NAME(pressed), callable_mp(this, &LimboAIEditor::_on_new_script_pressed));
 			tab_bar->connect("tab_clicked", callable_mp(this, &LimboAIEditor::_tab_clicked));
 			tab_bar->connect("active_tab_rearranged", callable_mp(this, &LimboAIEditor::_move_active_tab));
 			tab_bar->connect("tab_close_pressed", callable_mp(this, &LimboAIEditor::_tab_closed));
diff --git a/editor/limbo_ai_editor_plugin.h b/editor/limbo_ai_editor_plugin.h
index 03e74ec..2e350bf 100644
--- a/editor/limbo_ai_editor_plugin.h
+++ b/editor/limbo_ai_editor_plugin.h
@@ -227,6 +227,7 @@ private:
 	void _on_history_forward();
 	void _on_task_dragged(Ref<BTTask> p_task, Ref<BTTask> p_to_task, int p_type);
 	void _on_resources_reload(const PackedStringArray &p_resources);
+	void _on_new_script_pressed();
 	void _task_type_selected(const String &p_class_or_path);
 	void _copy_version_info();
 
diff --git a/hsm/limbo_hsm.cpp b/hsm/limbo_hsm.cpp
index 71c81aa..6288cfe 100644
--- a/hsm/limbo_hsm.cpp
+++ b/hsm/limbo_hsm.cpp
@@ -51,11 +51,13 @@ void LimboHSM::_change_state(LimboState *p_state) {
 
 	if (active_state) {
 		active_state->_exit();
+		active_state->set_process_input(false);
 		previous_active = active_state;
 	}
 
 	active_state = p_state;
 	active_state->_enter();
+	active_state->set_process_input(true);
 
 	emit_signal(LimboStringNames::get_singleton()->active_state_changed, active_state, previous_active);
 }