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I can't click CLOSE/Maxsize/Minsize button on Windows10

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  • 1 has this problem
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  • Last reply by sfhowes

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Please see the picture, in Windows 10, I can't click these 3 button that in top-right of thunderbird window, there is no any response. -Thunderbird 40 beta1.

Please see the picture, in Windows 10, I can't click these 3 button that in top-right of thunderbird window, there is no any response. -Thunderbird 40 beta1.
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So, I hope I can add a title bar from Customize...

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I have the same problem (I use Windows 10 and before Thunderbird 40 beta 1 and now Version 41.0 beta)...