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In past 2 days Firefox will occasionally close all open windows then return them after a brief delay.
In past 2 days I've experienced Firefox randomly closing all open firefox windows and then bringing them back after a brief delay. There is no mention of an update or other reason while this would occur.
In past 2 days I've experienced Firefox randomly closing all open firefox windows and then bringing them back after a brief delay. There is no mention of an update or other reason while this would occur.