Here you'll find a list of fixes that were made in oktober. Some of the fixes below take effect the moment they were implemented, while others may require scheduled realm restarts to go into effect. This list will be updated as additional fixes are applied.
Other Data Base fixes (quests, creatures, loot etc) you can look at this section (from 06.10.18), with messages from Herald.
Changes:
October 18, 2018
General:
Fixed health points for minions, if their health was calculated from owner's health points.
Guilds: Fixed an issue due to which guild logo didn't update until player re-logged.
Fixed an issue due to which player received an error message "A more powerful spell is already active" when he tried to refresh duration of a crowd control effect.
Fixed issue with unpacking battle pets from gifts.
Fixed interaction with https://www.wowhead.com/npc=42684 (and some other npcs) aboard the Alliance Gunship in Deepholm, now it' possible to take and complete quests.