previously the lifespan of the element was tied to the current tab. now it's associated to the first tab that showed the shortcut, so the title of the original tab title is leaked as long as the tab is open and user selects a shortcut on a different tab
Bug 1952268 Comment 4 Edit History
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previously the lifespan of the element was tied to the current tab. now it's associated to the first tab that showed the shortcut, so the title of the original tab title is leaked as long as the tab is open and user selects a shortcut on a different tab. closing the original tab makes the title unavailable