Worn/Sturdy quality Abyss Lord tomes drop with generic "GARMENT NAME" item names, and upon returning to the Tavern, are deleted from your inventory without warning.
NOTE: This bug was previously declined without comment, but is still occurring. I am resubmitting it, as no explanation for its decline was given, and no response was made to my comments after more than a week.
Screenshots: This first one proves that the generic-named tomes are dropping in the wild.
The same tome, in my inventory after picking it up.