Hi,
Since the latest client update, the video at 1920x1080 (windowed, not full screen), has a corrupted bar across the top of the window, that pushes the play area downwards, graphically. Clicking on items/controls within the view has to be compensated for, for this shift (i.e have to click several pixels above a close button to make it work). AMD video driver is latest for Linux OS, issue is only with windowed 1920x1080 (preferred use).
Regards,
Califf