This means that either something is wrong with your source or that something is wrong with ffmpeg's decoder. The best place to continue would probably be
ffmpeg's bugtracker.
What happens if you use the new truehd_core bitstream filter (designed to drop atmos extensions; usage: ffmpeg -i <inputfile> -vn -sn -c:a copy -bsf:a truehd_core -f <outputfile>)?
If the errors always happen at the same place, you could upload just the few seconds of the track for an issue. (Btw: Does this Bluray use seamess branching and is the error at a branchpoint?)