It's because the panel popup is always created as a new window and when we pile them up (we open a new popup while the old one is still open) the anchor calculation is wrong - the underlying popup is shifted by move-to-rect call. Not sure why we fail to close the popup after second mouse click.
Bug 1784876 Comment 1 Edit History
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It's because the panel popup is always created as a new window and when we pile them up (we open a new popup while the old one is still open) the anchor calculation is wrong - the underlying popup is shifted by move-to-rect call. Not sure why we fail to close the popup after second mouse click. EDIT: That's also reason why we can't close the previous popup - according to layout the two popups is correct setup.