Maximize/Minimize/Close buttons not visible and window not draggable on external monitor when maximized

I am using a laptop and 2 external monitors. When using Musescore on the external monitors, if I maximize the window, the minimize/maximize/close buttons disappear and I can't drag the window at all. The only way I can get out of it is to hit Win-Left Arrow which then makes them reappear. The buttons appear as normal if the window is not maximized. It behaves normally on the laptop screen.

Windows 4.4.4.243461245