I have the same layer. One with alpha blocked and the other with alpha
transferred to mask. I paint both with a very soft white airbrush in
bottom-right corner. In this image, we can see that there is a soft
white peculiar stripe vertically and horizontally:
When I disable mask in one layer and transfer alpha to mask in the other
(and disable that mask), I realize that the soft airbrush painted a lot
outside the permitted zone. That is where alpha is close to 0.
The same with any color.
Is this a bug?
Mario Sottile - Director