SSMS 17.2 (and 17.1) Mirror configuration fails because mirror database is restoring
Attempting to configure database mirroring through the SSMS 17.2 (and 17.1) GUI between two SQL 2016 servers fails with "Database 'Test' cannot be opened. It is in the middle of a restore."
Yes, indeed this is a long outstanding issue.
I’m looking into it (at last!)