Created attachment 8747961 [details] Screen Shot 2016-05-02 at 5.55.12 PM.png User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36 Steps to reproduce: On OSX 10.11.4 running dual monitor. Open or move the Thunderbird application window onto the secondary monitor. Actual results: On the secondary monitor, Thunderbird application window displays a mirrors image of itself in the top left corner of the application window. This was not happening prior to the upgrade to v45. Expected results: Application window should not be mirrored inside of itself.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 3 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1266354
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