diff --git a/src/lib/components/common/Collapsible.svelte b/src/lib/components/common/Collapsible.svelte
index a43727bb7e..d4207c65e9 100644
--- a/src/lib/components/common/Collapsible.svelte
+++ b/src/lib/components/common/Collapsible.svelte
@@ -2,7 +2,7 @@
 	import { decode } from 'html-entities';
 	import { v4 as uuidv4 } from 'uuid';
 
-	import { getContext } from 'svelte';
+	import { getContext, onMount } from 'svelte';
 	const i18n = getContext('i18n');
 
 	import dayjs from '$lib/dayjs';
@@ -55,7 +55,9 @@
 
 	export let onChange: Function = () => {};
 
-	$: onChange(open);
+	let _mounted = false;
+	onMount(() => { _mounted = true; });
+	$: if (_mounted) onChange(open);
 
 	const collapsibleId = uuidv4();
 </script>