Using the new version of 2.7 which is released, contrary to what Jira is showing in the versions drop down, trying to authenticate to a mercurial repository using https with username/password fails with 2.7.   I will prompt repeatedly for the password, never persist it in the keychain, add a keychain token for application password (which obviously is useless it seems), and fail all authentication checks.

Opening the exact same repository with the same credentials in 2.6.3 has no issues whatsoever, creating what seems to be a working application password.

Basically, 2.7 is useless.  This is a far too often recurring theme with Sourctree updates and my team now generally refuses to do an update until it is tested thoroughly, which is a colossal waste of time for all involved.