I noticed various bugs in the French version of AP 10.1 which I just bought directly from the Serif site. I am working under MacOS 11.5
1 - Bug in Divide blend mode
In principle, any layer divided by its own copy should give white everywhere, even for pure black pixels. The following screenshot shows very different results. It displays the effect of a double gradient Red-Black-Green (colors everywhere fully saturated) divided by itself.
Seemingly, white is recovered everywhere if we add blue component, i.e. when none of the colors is fully saturated.
2 - Keyboard shortcut issues
These issues only affect the French version (not the English version). The system CMD H shortcut should hide the application itself, but it does not because it has been also assigned to the "Show pixel selection" menu. Unfortunately, we cannot resolve the conflict by assigning another shortcut to this menu because it no longer appears in the Preferences lists for shortcuts
None of these issues existed in version 10.1 distributed by the Apple Store. In return, there were other bugs in the Divide blend mode 🙂