--- a/ui/common/wrapper.c	Wed May 20 19:38:54 2026 +0200
+++ b/ui/common/wrapper.c	Wed May 20 20:00:35 2026 +0200
@@ -55,6 +55,8 @@
 }
 
 void ui_mainthread_object_unref(UiObject *obj) {
+    // TODO: detect if this is already the main thread and call
+    //       ui_object_unref directly in that case
     ui_call_mainthread(obj_unref, obj);
 }
 
@@ -63,6 +65,7 @@
 }
 
 void ui_mainthread_document_unref(void *doc) {
+    // TODO: see ui_mainthread_object_unref
     ui_call_mainthread(doc_unref, doc);
 }