WoW freezing macOS altogether requiring power cycle

There is no other app can crash the macOS itself I know of (Apple/Mac veteran), so this is quite a serious bug. Specifically, whenever I run Sidestreet Sluice (in particular), on any toon, the macOS will freeze at least once. Often 2, 3, 4 times. Usually when at a mini/boss fight. Here is where I’m at:

  1. After some fairly in-depth troubleshooting (can handle a computer reasonably well), I can confirm it’s not add-ons, as it happens with all turned off.
  2. I have cleared every cache file, and done a very deep dive on the macOS to eliminate as many possibilities as I can. It happens even after a clean client install.
  3. I’d like to hear from devs how a corrupt UI file could ever cause the macOS itself to lock up completely until a forced restart is required, as it’s based on FreeBSD/Mach and this is really hard to achieve even if trying.
  4. I’d also like a specialist to have a look and comment on the following system error from the logs, as this is exactly what happens (I can’t see where to upload a screen shot):

(multiple timestamps) World of Warcraft delegate_identifier:Performance Diagnostics__:::__message:This method should not be called on the main thread as it may lead to UI unresponsiveness

  1. Very, very rarely, instead of locking macOS, there is an insta d/c, so again, it seems deeper than a corrupt/outdated add-on or UI config.

Another weird error that pops up is:

World of Warcraft (TextInputUIMacHelper)
Subsystem: com.apple.TextInputUI Category: CursorUI
ViewBridge to RemoteViewService Terminated: Error Domain=com.apple.ViewBridge Code=18 UserInfo={com.apple.ViewBridge.error.hint=this process disconnected remote view controller –– benign unless unexpected, com.apple.ViewBridge.error.description=NSViewBridgeErrorCancelled}
ViewBridge to RemoteViewService Terminated: Error Domain=com.apple.ViewBridge Code=18 UserInfo={com.apple.ViewBridge.error.hint=this process disconnected remote view controller –– benign unless unexpected, com.apple.ViewBridge.error.description=NSViewBridgeErrorCancelled}

I have no idea if this is related, but it’s nowhere near as frequent as the above one. Anything with a ‘remote view’ flavour is unexpected to me, however. Anything crashing like that is unpleasant either way.

It’s a Xeon based Mac Pro 2019 with 10^15 CPUs, dual Radeon GPUs, 128GB RAM, SSDs etc., so I can be video transcoding, playing HiRes Apple Music, email, web browsing, Photoshop, etc. whatever all at same time, and nothing else has a problem. Just WoW client freezing macOS.

Which version of Mac OS? That’s a critical piece of info. I’ve seen something similar before in Mac OS Ventura – doesn’t happen in Monterey nor Sonoma. No idea on Sequoia. But I suspect this is actually an Apple bug.

It’s Sequoia, and I raised a bug report with them too to cover that off.