_submit_and_fetch was iterating history[prompt_id]['outputs'].values()
and grabbing the first image it saw. With the inpaint workflow that
includes nodes other than SaveImage that emit IMAGE outputs (the
GroundingDinoSAMSegment node returns an overlay/mask-applied image
in addition to the mask), and dict iteration order is undefined —
sometimes we'd return the overlay (which can render mostly black)
instead of the actual SaveImage result.
Fix: prefer outputs from the SaveImage node id ('9' in every workflow
the tool builds) explicitly. Fall back to scanning all outputs only
if SaveImage didn't appear (workflow drift, manual edit, etc).
User reported seeing the correct inpaint in ComfyUI's native UI but
black in chat — this is the gap.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
William Gill
18a205d69d