after upgrade to 1.12.2 tortoiseplink session closes unexpectedly

[koffka]

This all started yesterday after updating from 1.10.3 to 1.12.2.  I can ssh to remote server, but could not svn+ssh. My colleagues who haven't upgraded yet don't have any issue.

Found workaround by changing tunnels config to use plink instead of tortoiseplink and now svn+ssh is working again, albeit with annoying command prompt appearing often. 

Using tortoiseplink, /var/log/secure on svn server just logs "Connection closed by <IP>"

With plink I get "Accepted publickey for <user> from <IP> port <P> ssh2" / "session opened" / "session closed" as expected.

FYI I don't have the default settings registry key mentioned in faq https://tortoisesvn.net/faq.html#sshclosed

Another recent report here, giving workaround https://superuser.com/questions/1474934/svnssh-and-tortoisesvn-network-connection-closed-unexpectedly

Thanks for any help :-)