vueuse
diff --git a/‎packages/core/useFullscreen/index.ts
Copy file name to clipboardExpand all lines: packages/core/useFullscreen/index.ts
+3-1 b/‎packages/core/useFullscreen/index.ts
Copy file name to clipboardExpand all lines: packages/core/useFullscreen/index.ts
+3-1
@@ -1,6 +1,6 @@
 import type { ConfigurableDocument } from '../_configurable'
 import type { MaybeElementRef } from '../unrefElement'
-import { tryOnScopeDispose } from '@vueuse/shared'
+import { tryOnMounted, tryOnScopeDispose } from '@vueuse/shared'
 import { computed, shallowRef } from 'vue'
 import { defaultDocument } from '../_configurable'
 import { unrefElement } from '../unrefElement'
@@ -160,6 +160,8 @@ export function useFullscreen(
   useEventListener(document, eventHandlers, handlerCallback, listenerOptions)
   useEventListener(() => unrefElement(targetRef), eventHandlers, handlerCallback, listenerOptions)
 
+  tryOnMounted(handlerCallback, false)
+
   if (autoExit)
     tryOnScopeDispose(exit)