Chrome behave differently on Mac where the shortcut for browser fullscreen is `fn`+`F`, it still dispatch the keyboard event but it seems not cancelable (i.e. calling preventDefault() won't prevent exiting fullscreen). And Chrome's behavior on Windows where the shortcut for browser fullscreen is also `F11` is the same as Linux (event isn't dispatch at all). I am not sure why Chrome behave differently on Mac. But I feel that it might make more sense to behave consistent on each platform? I will try to check Chromuim source code to see if I could find any clue.
Bug 1821886 Comment 13 Edit History
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Chrome behave differently on Mac where the shortcut for browser fullscreen is `fn`+`F`, it still dispatch the keyboard event but it seems not cancelable (i.e. calling preventDefault() won't prevent exiting fullscreen). And Chrome's behavior on Windows where the shortcut for browser fullscreen is also `F11` is the same as Linux (event isn't dispatched at all). I am not sure why Chrome behave differently on Mac. But I feel that it might make more sense to behave consistent on each platform? I will try to check Chromuim source code to see if I could find any clue.