HEIC exporting fails due to unrecognized file extension
Newly released 2.99.2 doesn't let me export a file with the .heic extension:
"The given filename does not have any known file extension. Please enter a known file extension or select a file format from the file format list."
It works just fine for the 2.10 branch built with the very same version of libheif though.
I can export AVIF with both versions of GIMP.