As someone who used to test PTR builds for WoW for game breaking bugs prior to release to the PTR servers, prior to Activision buying them *(Austin, TX location)... I can tell you that one must "Log into the build" as QA step #1. You have a QA team for EXACTLY this type of thing. They CLEARLY didn't so much as log into this build to do any testing of ANY kind. They used AI to write code, assumed it was right, and that it would break nothing, SKIPPED the other 99% of their job, and hit the "Rease to Production" button on their screen. Then went out to have a smoke and talk about Stranger things with Co-Coworkers... ;-)