- The mask editor measured the mask with the brush's faint soft edge (alpha > 8) where the node uses half strength (> 0.5), and rounded .5 up where Python rounds half to even. Its crop box and size could be one step off the real output (728 vs 720, 904 vs 896). Now 301/301 identical. - After Save the node face raced between the crop and the source picture (2 crop / 8 source in 10 Saves) and a Run always showed the source. It now shows the source on every path. - Help: the node picture is the image you paint on; a Preview Image on `image` shows the crop. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>