I have been using the version 188.8.131.52 Beta, and I found a bug. After working in composition mode, I press escape to return to the main scrivener panels. However, the scrivener panel is around 40% smaller in size than the actual Scrivner window (which is maximised). The only way to resort it is to press ‘restore down’ then maximise again.
I have experienced this on both of my computers running Windows 10.