Earlier today I updated SourceTree to version 1.6.24 and it is now failing to authenticate with GitHub - it always reports invalid username/password even when I know they are correct.
We are not using 2-factor authentication so that isn't the problem.
One of my colleagues confirms that 1.6.23 worked fine for them but upgrading to 1.6.24 also stopped them from authenticating with the same error.
When will this be fixed?
EDIT: Experimentation shows that it still works via the terminal, just not when performing the actions using Sourcetree.