i managed to find a workaround. i deleted Xcode and all it's associated files via AppCleaner. then i downloaded the 26.5 RC file on the Apple Developer site. the "Sign In With a ChatGPT Account..." still isn't working, but they added an "Authenticate with configuration file..." option. if you set it up with that, then it works just fine.
Topic:
Developer Tools & Services
SubTopic:
Xcode
Tags: