MC6 MK2 - weird characters and lockup

Hi, bought my MC6 MK2 brand new Oct 2019 and have not had any issues until this week.
Twice now, when I go to trigger a DLY On/Off, I get all kinds of weird characters and the system becomes unresponsive somewhat. I can bank up / down, but the screen is fully blank.

If I unplug the power and reapply power, it goes away. Like I said, it’s been fine for the last year until this week.

I’m running the latest 3.7. I have a photo of the behavior.