git actions fail in v1.6.24

I'm using SourceTree with Bitbucket
After updating to 1.6.24 from 1.6.23 any git actions fail on auth
I can see my Bitbucket repos but trying to clone gives me a password prompt again and it always fails (yes my password is correct, I'm pasting it from a password manager and it works until I try to clone).
I can't push an existing repo either.
I have uninstalled, deleted all the data folders and reinstalled and it still didn't work.

I've now downgraded to 1.6.23 and everything is working again.