Modifying the %album% tag causes some kind of loop error causing the appended text to be repeated for each track, often until the character length limit is hit in file naming. In my setup, it even affects the documented %_releasecomment% change.
For more of a discussion, please see my original post.
If you need anymore info, please let me know.
My setup:
Picard 2.8.1 (may have occurred in 2.7.3, but not in 2.7.1)
Windows 10 x64
AMD Ryzen 5800 on ASRock 570x Taichi
32 GB RAM
FLAC files to be tagged are accessed from my file server. Error occurs whether I use a mapped drive or an IP address.
Chris