Blizzard has posted Patch 9.15 hotfixes for today which includes some fixes to Mage Tower Timewalking bugs and overscaled effects.
Here you'll find a list of hotfixes that address various issues related to World of Warcraft: Shadowlands, Burning Crusade Classic and WoW Classic. Some of the hotfixes below take effect the moment they were implemented, while others may require scheduled realm restarts to go into effect. Read more on wowhead.com