Playing a record in the jukebox shows that it is playing the file "record.blocks", "record.cat"
Could swear that before, it just said "Blocks", ie, the song name, not the filename with the pointer ('.') in between.
Apologize if duplicated. Searched for but didn't find these issues.
Confirmed, also records from the resource packs aren't working anymore, dunno if this relates to this bug.