I ran into a problem where I can no longer subtract mesh from my subtool. I can add, but when I try to subtract I instead get this grey marking that looks similar to masking.
I searched for a solution to this and the only thing I could find was to “turn off polypaint” and that didn’t work as it wasn’t even on in the first place.
Interestingly enough, when I scaled up my mesh I was able to subtract from it…until I reached the original size. Also in Pic1 you can see the icon in the subtool menu shows the subtraction that was made (this change disappears after a few seconds). What’s going on?