Subtract not working
When I add a vector box to the bottom of a bitmap graphic to remove that lower part and hit the subtract button with both elements selected, a part of the top gets removed too. I've done is repeatedly with same result. The bottom part that covers my box gets removed - but what's up with the topmost part also getting deleted as well? Also, the subtract button doesn't work unless I click it two times fast. Doesn't have any effect when clicking once. Yet another bug? I'm on W10.