Logic A) Tab bar autohide is intentionally blocked by opened popup because the tab bar should not be hidden while you open a context menu on the tab bar.
Logic B) On the other hand, TST shows hidden popup on the content area if the webpage includes any plugin area, because Firefox cannot receive mousemove events on plugin areas.
As the result, the hidden popup unexpectedly blocked to hide the tab bar... The popup for the logic B must be ignored by the logic A.
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