diff -r 86ed681698aa -r 185d9fe96c6b ui/common/args.c
--- a/ui/common/args.c	Tue Jul 21 16:46:44 2026 +0200
+++ b/ui/common/args.c	Wed Jul 22 21:21:24 2026 +0200
@@ -2610,7 +2610,7 @@
 }
 
 void ui_textfield_args_set_onchange_action(UiTextFieldArgs *args, const char *action) {
-    args->onchange_action = action;
+    args->onchange_action = strdup(action);
 }
 
 void ui_textfield_args_set_varname(UiTextFieldArgs *args, const char *varname) {