Corporate theme error message overlapping the screeen

Hi,

I installed Corporate theme pretty much out of the box. Meaning, I didn't customize it yet and I only have two plugins which I could disable but problem still persists. Whenever I get an error in my buddypress I get this weird look. I couldn't even describe it but maybe a problem with css?

see attachment. It doesn't only happen when I create a group but whenever I get an alert message that comes out.

What should I adjust?