The 11.2.2 (?) & .3 updates made the problem better apparently, but this last week with my new M1 I've seen a lot of weird things happening. If there's a power pass-through like on the OWC USB-C Travel Dock, I've watched the computer do a hard (reboot) crash a few times. I've tried also the j5Create USB & Ethernet hub; the hub routinely failed in r/w operations to flash drives. Using an external monitor often won't work, and it involves hooking the dock & computer up in just the right order when it does.
So, yay that these devices aren't not damaging the computer? But there's still a long way to go.