2.99.16: Export to Png in indexed mode gets dark
When trying to change png files to indexed colors, standard options on the indexation, I get a very dark result on the 2.99.16 flatpak.
Same PNG after changing to indexed mode and overwriting the file.
Shown in console when indexing:
libpng warning: Wrote palette index exceeding num_palette
Tested also with 2.99.14 which didn't have the problem.
System: Debian testing