Hi Ocratato - As per my original note, I tried it with "Run in terminal" both checked and unchecked. SSH is NOT set to login without a password.
Hi HaydnH - I tried running with a command line "konsole -e /usr/bin/ssh -4 -l bgee server.mynetwork.net". It does not work. As per your suggestion, I added STDOUT and STDERR redirection to the command line. No output file was created.
By accident I discovered the culprit seems to be the use of command-line options! I created a KDE menu item with a command line of "/usr/bin/ssh firstname.lastname@example.org
" and that works. I had to change the ssh_config file to force use of IPv4 (which is a different problem).
This is, by the way, on Fedora 25. I also tried it on a test Fedora 26 system and got the same result. If any command line parameters are passed to ssh, then the launch fails. Why would that be??? It makes no sense.
I now know a work-around. It is really annoying, but it gets me further down the road. The only two command-line parameters I really needed can be implemented in another way.