Comment 14 for bug 721136

Lukas,

    THX for your minimal example! Admittedly, I cannot
reproduce your "foo.tif" with rev 6d6c88dcdc63, i.e.
current tip. I tried any image order, NFT, GC, w/optimizer,
and wo/optimizer. The result _always_ looked ok and
never showed any black areas. Moreover the seam line
(`--visualize') between the image pairs was sane, too.

Maybe the bug you were hunting for such a long time is
gone now. OTOH, I have example images from Bruno which
let the seamline vectorizer go postal. So, there are some
bugs left that can cause black areas. (Usage of plural
to be on the safe side.)