diff -r d466b6edfebc -r 4d04cb879daa ui/gtk/toolkit.c
--- a/ui/gtk/toolkit.c	Sat Oct 04 10:59:56 2025 +0200
+++ b/ui/gtk/toolkit.c	Sat Oct 04 12:29:44 2025 +0200
@@ -322,15 +322,15 @@
     ui_destroy_boundvar(NULL, var);
 }
 
+// TODO: move to common
 void ui_destroy_boundvar(UiContext *ctx, UiVar *var) {
+    uic_save_var(var);
     uic_unbind_var(var);
     
+    // UI_VAR_SPECIAL: anonymous value variable, that is not registered
+    //                 in ctx->vars
     if(var->type == UI_VAR_SPECIAL) {
         ui_free(var->from_ctx, var);
-    } else {
-        ui_free(var->from_ctx, var);
-        // TODO: free or unbound
-        //uic_remove_bound_var(ctx, var);
     }
 }