Cancel non-ancestor popups when showing a new popup #3490
Merged
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Addresses GH #3484
As far as I can tell, the popup level checks in this module are meant to handle nested popups. It seems to me that the goal is for at most a single hierarchy of popups to exist at any given time - bearing that in mind, this change checks any popups currently tracked by the module, canceling any that don't share an element hierarchy with the new popup.