Incorrect thumbnail in layers dialog
Environment/Versions
- GIMP version: current master
- Package: self-built using MSYS2
- Operating System: Windows 10 Home, 64-bit
Description of the bug
This is not present in 2.99.16, only in master. Open the attached imageP3-rgb-maxvalue31.xcf
Look at the thumbnail of this image in the Layers dialog. The top-left pixel should be red, but is yellow.
As a guess, it might be related to the small non-square size (3x2), in combination with having to stretch the pixel at 0,0.