I say 'hopefully' because I have never been able to reproduce this issue in our machines.
Sorry, I find that hard to believe. This is not intermittent behavior. It -always- works like this. What I think is going on is that you see the same behavior we do but you think it's fine. This is a case where somehow we have different opinions on what's the right behavior and what is not.
I just reproduced this again in 1.7.6
- select image to be masked
- pick a mask from the menu
- image turns red (mask is shown)
- open mask menu again
- 'show mask' item is not checked
- check 'show mask'
- mask no longer visible
You can't tell me it doesn't work that way on your windows box or with some on your team you trust to report issues accurately. If it doesn't then I don't know what it's worth you even running PI on your windows VM at all. It would be completely irrelevant and not representative of what your users experience.