Dock is enjoying hard-to-get – Ask Completely different

MacBook Professional (16-inch, 2019) operating Monterey (12.1) was working usually.  I closed the lid and went out to do some yard work.

Once I got here again and opened it, the Dock is goofy.  When the pointer will get near the dock, the Dock slides off the display screen.  If I proceed additional down, when the cursor will get inside just a few pixels of the sting, the desktop background begins blinking black, regular, black.

I’ve by no means turned on hiding and I’ve not modified any preferences immediately or yesterday.  Nor put in any software program nor did an replace.  All is on the newest accessible model.

Nothing is in full-screen mode.

Trigger? Answer?