https://www.reddit.com/r/2007scape/comments/1bd1zxj/psa_there_is_still_a_no_bonus_bug_at_mta/
https://www.reddit.com/r/2007scape/comments/1b7ahp7/i_think_the_enchanting_room_in_mta_is_bugged/
This was a result of something from leagues, I think it was broken during the last league as well. I don't know the replication steps, but there are posts about it..
Thank you and I'm really sorry that was missed, I will make sure to include this in my report on Monday and bring it up directly.