Sorry, what I meant was, can you reproduce this issue in a smaller scale environment. Haha I’m certainly not suggesting you port your project over to pure XNA… though realistically, it should actually just work 
I know when I run into these issues, if I can recreate it in as small a code base as possible, it tends to be a little easier to identify the problem. It certainly helped me when diagnosing this issue…
I didn’t find a solution, but I managed to create a very small project that reproduced the issue. Given that the same problem did not occur without MonoGame involved, it led me to determine that I was working within the MonoGame problem space exclusively.
Sometimes when I do this, I actually can’t reproduce the issue at all and that leads me to believe the problem is somewhere within my own code. Just strategies to help diagnose and debug.
Anyway, it’s interesting that if you hover over it fixes it. Is the code that runs when you hover doing anything interesting?