Error reading SSH_ASKPASS output for prompt

1. Working fine.
2. Receive update notification.
3. Apply update and restart ST.
4. Can no longer push/pull/fetch, etc.

Guys, this really sucks. How it's possible to release a new version of the software in such a broken state is beyond me. I am now unable to work with ST.

I've done some investigating:

When using the terminal I see: fatal: protocol error: bad line length character: logi

So I:

1. Updated Putty (et al) and Git for Windows to latest versions. Still the same problem.
2. Re-configure my SSH keys to be OpenSSH style instead of Putty. ST GUI now works, terminal does not.