Unresponsive hashcat - ignoring keyboard input

I'm posting this on behalf on CyberGuard who is still waiting for his confirmation email to arrive.

I am currently running a 1080 Ti on an ubuntu 16.04.3 machine but am facing an unusal issue with hashcat. Hashcat does not seem to respond to any input once running.
No pause, no status, no resume, no quitting. CTRL+C is how I terminate the application.
It also seems that once an attack is finished, it doesn't quit on its own.
I was wondering if someone here has experience with this issue.

https://gyazo.com/f3bc81f585a865ecc70c1067c7cdeb19