diff --git a/packages/frontend/editor-ui/src/components/MainSidebar.vue b/packages/frontend/editor-ui/src/components/MainSidebar.vue
index d6be24937c..4b30262796 100644
--- a/packages/frontend/editor-ui/src/components/MainSidebar.vue
+++ b/packages/frontend/editor-ui/src/components/MainSidebar.vue
@@ -367,7 +367,7 @@ function onResize() {
 }
 
 async function onResizeEnd() {
-	if (window.outerWidth < 900) {
+	if (window.innerWidth < 900) {
 		uiStore.sidebarMenuCollapsed = true;
 	} else {
 		uiStore.sidebarMenuCollapsed = uiStore.sidebarMenuCollapsedPreference;