When using they power key, flight doesn't occur. I have tested it and it works fine with the pixie. Let me know if you already know about this though!

This is using the Medieval Craft fabric 1.18 most recent release, in case there are any known conflicts.

Ah I figured out the issue. It only happens when you change INTO fae from another origin using console commands. When simply selecting fae as your origin it is fine. It works as intended, but not when you play around with commands and changing origins on an existing character.