Comment 15 for bug 1165649

(In reply to Karl Tomlinson (:karlt) from comment #10)
> My preferred fix here would be to fix bug 724554 by not exiting fullscreen on
> focus out. (Even if a message is shown on focus in, that need not require
> explicit acceptance of fullscreen again and so could be transient, or it
> could even be shown only if focus is lost for some period of time.)

Not exiting fullscreen upon blur and showing the "$domain is now fullscreen" warning for a short period of time when when focus returns to a fullscreen window seems like an acceptable compromise to me. I've gotten a lot of feedback from users that they want to be able to blur a fullscreen window (primarily use case is watching a fullscreen video while doing something else in another window/app), so I think this is a good idea.