First of all, I just started using Groupy 2 (still in trial mode) and I am already very impressed with this tool! It works great so far! 

One small issue that I ran into so far, was that when using the mail client 'eM Client' with a maximized screen, a blank space appeared on top of and underneath the tab/window. To clarify, see attached screenshot (the white bits contain sensitive information and were manually redacted by me):

Is there a setting that I'm missing or not using Groupy 2 correctly?

Thanks for any help or advice on this matter!