SUMMARY The comic manager does not export "fill layers" at all, at least with TIFF format (I did not try other format). (Workaround: Convert the fill layer into drawing layer) STEPS TO REPRODUCE 1. Create a new comic project 2. Create a fill layer (a red one for example) 3. Export the comic in tiff format 4. The output tiff will be black OBSERVED RESULT The output is black EXPECTED RESULT The output should use the fill layer color SOFTWARE/OS VERSIONS Linux/KDE Plasma: Linux Mint 20.2
*** This bug has been marked as a duplicate of bug 447807 ***