bug with reset-configuration on 4.17

After doing two

/system reset-configuration skip-backup=yes no-defaults=yes keep-users=no
on a RB411U with routeros 4.17, ssh stops working.

$ ssh admin@192.168.1.37
Protocol major versions differ: 2 vs. 1

Can somebody confirm this bug ?
This RB was downgraded from routeros 5.12

Can anyone confirm how to fix this? I also am seeing this issue.