I seem to be getting two odd graphical issues. When I left-click on any blank space in the score the whole window goes blank - notation gone, everything. It only reappears when I scroll or adjust with the right button (hand grabber).

The second issue is that when I select items with the selection tool the selection is no longer transluscent, i.e. I cant see what I've selected as the selection is a solid colour.

I'm guessing these are potentially related issues.

Windows 10 Home (v1607)

Cemputer: Dell, Intel Inspiron i7-5500 @2.40 GHz

16GB Ram

Thanks,

C.