Looks like I filed this four years ago, in bug 1413763, and then lost track of it. To answer Hiro's question from back then: (In reply to Hiroyuki Ikezoe (:hiro) from comment #2) > How do we hide the panel? > If we do hide by setting visiblity:hidden, the transform animation keep > running. The panel is hidden by making its nsView hidden and closing the view's nsIWidget. The panel widget has its own compositor.
Bug 1742797 Comment 11 Edit History
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Looks like I filed this four years ago, in bug 1413763, and then lost track of it. To answer Hiro's question from back then: (In reply to Hiroyuki Ikezoe (:hiro) from comment #2) > How do we hide the panel? > If we do hide by setting visiblity:hidden, the transform animation keep > running. The panel is hidden by making its nsView hidden and by closing the view's nsIWidget. The panel widget has its own compositor.