Open a Firefox window with a few tabs, where one of the tabs is twitter.com. Sometimes, when the twitter.com tab is active, pressing Ctrl+Shift+Tab will open the tab preview popup, even though the browser.ctrlTab.previews pref is false. <Jesse> i can reproduce on mac by focusing the "What's happening?" box on twitter and pressing ctrl+shift+tab twice
Status: NEW → RESOLVED
Last Resolved: 7 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 544833
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