Hi folks,
It's not really a bug, but more a usability enhancement which could prevent users misunderstandings.
I've noticed some cases where checkboxes doesn't use the "mixed" (see Xcode) state.
For instance:
Create two rectangles
Set the stroke option of one to "Scale with object": checked, the other not.
Select the two rectangles
The expected result would be to use the mixed state for the checkbox.
I'm sure this applies to other options, sadly, I did not take note of this when I stumble on them.
Thanks for your support and your work always making Affinity software better.