I tested little bit more. It looks this problem does not appear in Layers window, but it does appear in Images (most annoying) and in History (I don't use this window so often).
I have checked the code fix in bug 602660 at https://github.com/jpobst/Pinta/commit/2d8f375c3ff44fbf6d3cb58f4b245185ca3951f9 and it looks like only one parameter to change from true to false so it is probably very easy to fix this problem.
I tested little bit more. It looks this problem does not appear in Layers window, but it does appear in Images (most annoying) and in History (I don't use this window so often).
I have checked the code fix in bug 602660 at https:/ /github. com/jpobst/ Pinta/commit/ 2d8f375c3ff44fb f6d3cb58f4b2451 85ca3951f9 and it looks like only one parameter to change from true to false so it is probably very easy to fix this problem.