Hi. Not a biggie, but at 0% the mask filter is rotated slightly anti-clockwise, and clockwise at 100%. At 50%, it’s level.
Yes, I see it - more noticeable with softness reduced to 0. This is something in the tricky math of the code here if you want to take a look. In the meantime, I am changing the default to be 50%.
Cheers! I’ll take a look shortly.