I just checked on Pop!_OS to see what version I’m running there because I know everything works fine. harfbuzz isn’t even installed…
When I’m finished work later today I’ll have a look on Nobara for the version installed cs expected etc.
EDIT: I solved the issue.I came across a similar issue on the GitHub repo for harfbuzz and while reading the log file again I had an ah-ha moment. More details in the post.