On the Crystal Preset UI, it lets you change the default "Crystal Preset 1" name... but when I switch to another preset, close and reopen the UI, or switch characters, the names I've edited them to have reset to the default. Is there a save or apply button I'm not clicking or is this a bug of some sort?

Seems like your settings arent applying. Did you try to restart the game yet?

You can try to scan files as well, sometimes that can fix similar issues.