src/FilterItem.svelte

@@ -96,7 +96,10 @@
     return source ? source.export_url : undefined;
   })();
 
-  initial.includes(item) ? filtering.setChecked() : filtering.setUnchecked();
+  setTimeout(
+    () => (initial.includes(item) ? filtering.setChecked() : filtering.setUnchecked()),
+    0
+  );
 
   $: selected =
     $filtering === CHECKED ? [item, ...subselected.flat()] : subselected.flat();

src/calendar.js

@@ -26,8 +26,7 @@ const calendars = {
   w442JdS5AaQ6czrP: {
     cloud: clouds.ELEVES_ENS,
     name: "Écriv'ENS",
-    color: null,
-    initial: false
+    color: null
   },
   fRtjDkjrZyn6fxd8: {
     cloud: clouds.ELEVES_ENS,