Merge pull request #50680 from Calinou/project-default-single-window-mode

main/main.cpp

@@ -2140,7 +2140,7 @@ bool Main::start() {
 		}
 #endif
 
-		bool embed_subwindows = GLOBAL_DEF("display/window/subwindows/embed_subwindows", false);
+		bool embed_subwindows = GLOBAL_DEF("display/window/subwindows/embed_subwindows", true);
 
 		if (OS::get_singleton()->is_single_window() || (!project_manager && !editor && embed_subwindows)) {
 			sml->get_root()->set_embed_subwindows_hint(true);