Good to hear.
Monitor db size for a few days. If the abnormal growth returns, you can fall back to 1.41.6 or earlier until Plex fully resolves the problem (or re-run DBRepair). I’ve not noticed any growth on my server running 1.41.7.9823, but it has not had much traffic either.
Suggest you stop Plex and make a manual copy of the database files as a backup. This gives you a current backup that is not bloated.
You can then delete the other backups and recover the space (no need to keep the bloated backups).
Once Plex makes its own backup (every 3 days), you can delete the manual copy if desired.