Hi, since the latest Mac updates the loader doesn’t allow to paste passwords any longer, but it also does not support Keychain login. I double checked and its working fine in Safari itself. This is super annoying and a “security by obscurity” feature. The ability to paste the password should be restored.
I also replicated this problem. It’s probably a launcher update, not a game update that did this.
Jepp. Called it Loader, but Launcher seems to be the correct word here. 
Thanks for reposting the workouround!
Same issue here. Being able to paste user name and password was super useful as me and my partner both use the same computer so need to switch accounts regularly.
Hey all, this is indeed a Launcher issue. We have a fix for it in the next Launcher version, but no date set for releasing that. I’ll report back once we have a date.