SSHFS in Midnight Commander (mc) not working

I’m trying to access remote filesystems via mc using “cd sh://user@host:port” in mc’s command prompt. MC prints error “Cannot chdir to ‘sshfs://user@host:port’ Resource temporarily unavailable (11)”. On the command line it prints “Authorization required, but no authorization protocol specified”.

I’m using the same command syntax on Debian/ Ubuntu/ OpenBSD etc. pp. and it just works. This is my first time trying OpenSuse (Tumbleweed and Leap). Am I overseeing something here? I manually installed sshfs - it did not help.