editor/plugins/embedded_process.cpp

@@ -81,6 +81,7 @@ void EmbeddedProcess::_notification(int p_what) {
 		} break;
 		case NOTIFICATION_APPLICATION_FOCUS_IN: {
 			application_has_focus = true;
+			last_application_focus_time = OS::get_singleton()->get_ticks_msec();
 		} break;
 		case NOTIFICATION_APPLICATION_FOCUS_OUT: {
 			application_has_focus = false;
@@ -287,6 +288,14 @@ void EmbeddedProcess::_check_mouse_over() {
 		return;
 	}
 
+	// Before checking whether the mouse is truly inside the embedded process, ensure
+	// the editor has enough time to re-render. When a breakpoint is hit in the script editor,
+	// `_check_mouse_over` may be triggered before the editor hides the game workspace.
+	// This prevents the embedded process from regaining focus immediately after the editor has taken it.
+	if (OS::get_singleton()->get_ticks_msec() - last_application_focus_time < 500) {
+		return;
+	}
+
 	// Input::is_mouse_button_pressed is not sufficient to detect the mouse button state
 	// while the floating game window is being resized.
 	BitField<MouseButtonMask> mouse_button_mask = DisplayServer::get_singleton()->mouse_get_button_state();

editor/plugins/embedded_process.h

@@ -37,6 +37,7 @@ class EmbeddedProcess : public Control {
 	GDCLASS(EmbeddedProcess, Control);
 
 	bool application_has_focus = true;
+	uint64_t last_application_focus_time = 0;
 	OS::ProcessID focused_process_id = 0;
 	OS::ProcessID current_process_id = 0;
 	bool embedding_grab_focus = false;