strange ssh effects on sleep / screen lock

[ThomasWaldmann]

I am trying 2.0.27 with ecdsa ssh key (see also #34). Was happy that it just worked on first try:

Nov  3 14:28:57 tux sshd[2338]: Accepted publickey for tw from 10.10.10.154 port 37713 ssh2: ECDSA SHA256:KGqgknI25/oAKCF01cp4sIswqIXmYRrQrmbOGie6z1I
Nov  3 14:28:57 tux sshd[2338]: pam_unix(sshd:session): session opened for user tw by (uid=0)
Nov  3 14:28:57 tux systemd-logind[774]: New session 953 of user tw.

Then phone went to sleep and later I tried again and it did not work any more:

Nov  3 14:42:24 tux sshd[2934]: error: Received disconnect from 10.10.10.154 port 37782:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
Nov  3 14:42:24 tux sshd[2934]: Disconnected from authenticating user tw 10.10.10.154 port 37782 [preauth]
Nov  3 14:42:27 tux sshd[2936]: error: Received disconnect from 10.10.10.154 port 37783:3: com.jcraft.jsch.JSchException: Auth fail [preauth]
Nov  3 14:42:27 tux sshd[2936]: Disconnected from authenticating user tw 10.10.10.154 port 37783 [preauth]
...

If i force stop and restart XMouse app after that, it will be able to re-establish the connection.

Ubuntu 18.04 on host, Lineage OS 15.1 on phone.