diff -r 03599608d555 -r 8be7fd628fbc ui/common/object.c
--- a/ui/common/object.c	Fri Nov 15 21:16:18 2024 +0100
+++ b/ui/common/object.c	Fri Nov 15 21:23:16 2024 +0100
@@ -54,7 +54,9 @@
 }
 
 void ui_object_unref(UiObject *obj) {
-    if(--obj->ref == 0) {
+    // it is possible to have 0 references, in case
+    // a window was created but ui_show was never called
+    if(obj->ref == 0 || --obj->ref == 0) {
         if(obj->destroy) {
             obj->destroy(obj);
         } else {