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Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

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

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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.
Ìsopọ̀ yíyà aṣàfihàn

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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)...