Crashes when modifying Boot2Qt device settings

I am currently trying to get Qt Creator connected to my Boot2Qt device for deployment. SSH is failing due to a key issue. A Test of the device succeeds, but I get the following error: :-1: error: ssh: connect to host 192.168.0.221 port 20: Connection refused
Connection closed

So I went to modify some Device settings on my Boot2Qt device. I clicked Deploy Public Key which succeeded, then I clicked "Open Remote Shell" and Creator freezes up.

I started up again and I changed "Access via:" from Direct to my device name "test" and Creator freezes up as soon as I select the "test" option from the drop down.

After restarting Creator a few times in this way, I am no longer seeing the crash, but it was very consistent for a while. Happy to provide debug info if helpful. Tell me what to do.