Seems like the security check is flaky rather than the password rules. Weird that posting in the thread nudged it into working, but at least the account got through.
Windows 11 seems to expose every little bit of old UI behavior eventually. Link hover is one of those things that can look fine until someone actually tries to click through.
Nice to see the v2 version preserved here. Alt for horizontal feels a lot less awkward than retraining Shift muscle memory, and the middle-button pan bit is a handy extra.