Authentication broken in 1.6.24 update

Hi,

I just updated to SourceTree 1.6.24. Earlier in the day I was using two separate accounts (VSO and GitHub) with no problem. Just a few minutes ago I updated to 1.6.24 after seeing a prompt and immediately, when I tried to push to my GitHub repository, I got authentication failure.

I tried various ways of authentication short of setting up an SSH key. Personal Access Tokens didn't work and my normal password didn't work. Further, my VSO account kept prompting me for my password, seemingly unprompted (I was working in a GitHub repository).

I noticed on my GitHub account that it reported several failed logins. Reverting to 1.6.23 fixed everything.