When hovering over markers the popup window flickers and is unreadable.
When hovering over the lower right corner button the popup window flickers, until it take up the whole Visual Studio window. After closing it with Alt+F4 no hovering popup window is display, but the righ-click menu works normal.
Visual Studio 16.5.0
NCrunch 4.3.0.13
I have also submitted a bug report.
Regards
Wilhelm