Seems to be working still... Trying to update packages.

src/routes/events/[event_id]/(badges)/templates/ae_comp__badge_template_form.svelte

@@ -11,6 +11,13 @@
 
     let { event_id, template_id = null }: Props = $props();
 
+    function preventDefault<T extends Event>(fn: (event: T) => void) {
+        return function (event: T) {
+            event.preventDefault();
+            fn(event);
+        };
+    }
+
     const dispatch = createEventDispatcher();
 
     // Form fields
@@ -121,7 +128,7 @@
     }
 </script>
 
-<form onsubmit|preventDefault={handle_submit} class="p-4 space-y-4">
+<form onsubmit={preventDefault(() => {handle_submit})} class="p-4 space-y-4">
     <h3 class="h3">{template_id ? 'Edit' : 'Create New'} Badge Template</h3>
 
     <label class="label">