SSH doesn't pass ctrl-c or other control characters [closed]

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Fedora 28 with Gnome 3.28.2

Sometime in the past several months this problem turned up on an automatic upgrade. When I am connected using SSH to the server, I cannot cancel a runaway process using ctrl-c. For example, tail -f <file> runs fine but I can't stop it. Some typos can cause the same result and I can't recover the command prompt. I have to go to another window, sign in as root, and kill the process. (or close the SSH window and log in again).

Is this a known problem and how can I resolve it?

Thanks in advance.