SOLVED:
Just found out it was a bug. An alpha was applied to the maskingbrush while still showing “alpha off”. After clicking alpha off again the masking now works like it should.
original question:
Following the tutorial in ZClassroom about making a custom insertbrush (bolt),
I again noticed a strange issue: half-masking. Drawing a masking frame around a mesh does not mask it, only after sharpening the mask 2 or 3 times it works.
See here:
Instead of masking off everything in the masking-frame, some parts are semimasked, resulting in a skewed result when using the movetool instead of ignoring the masked off part.
Also: Somehow Ctrl+click on a surface with the transposetool active does not mask off the rest, any ideas?
Would be really glad for any help!