Blizzard UI Error When Completing Mythic+

Support Bug Report
1

I’m having this strange bug where when I complete a M+, the Blizzard UI pop-up that shows if you +1,+2, or +3 timed it as well as your rating increase doesn’t appear and instead I get this UI lua error. I’ve tried completely uninstalling ALL addons and it still occurred.

I fresh installed World of Warcraft and it fixed it momentarily but is now again having issues, any help or ideas is appreciated.

Message: …dOns/BlizzardChallengesUI/Blizzard_ChallengesUI.lua:896: bad argument #5 to ‘format’ (string expected, got nil)
Time: Mon Sep 23 16:01:07 2024
Count: 1
Stack: …dOns/Blizzard_ChallengesUI/Blizzard_ChallengesUI.lua:896: bad argument #5 to ‘format’ (string expected, got nil)
[string “@Interface/AddOns/Blizzard_ChallengesUI/Blizzard_ChallengesUI.lua”]:896: in function PlayBanner’
[string “@Interface/AddOns/Blizzard_FrameXML/TopBannerManager.lua”]:55: in function TopBannerManager_BannerFinished’
[string “@Interface/AddOns/Blizzard_FrameXML/EventToastManager.lua”]:1162: in function `OnAnimatedOut’
[string “EventToastManager.xml:17_OnFinished”]:1: in function <[string “EventToastManager.xml:17_OnFinished”]:1>

2

Probably not what you wanted to hear, but I am also getting this error and the banner does not show after keystones.

I’ve had the banner show maybe twice out of the 10 dungeons I’ve done. It showed even with all my addons enabled, and when I disabled some it didn’t show up again.

Didn’t have this issue in DF with the same setup. Let me know if you ever find a fix.

3

Yup, this same issue just started happening to me in M+ out of no where. Seems like Blizzard broke the boss banner lua code with a hotfix. Once it breaks in M+, it won’t show up anywhere else again. I did TW BT and it was working, did a key, and then it wasn’t showing the banner in LFR either.

4

Same here. Glad I’m not the only one with these LUA errors.
I like to think bugs appear when they’re in the process of changing things for the better.

5

I’ve noticed that whenever I get the error, it mentions Necrotic Wake even when the dungeon I complete is definitely not NW lol

6

Just wanted to add my voice to the mix, I’m also having the same issue.