G3223D, MacBook M1, flickering with vertical bars

I have a dell monitor that's just under a year old and has an issue where it will occasionally start flickering and have some vertical bars showing on the screen. It also is artifacting things a little bit that were previously visible on the screen.  So far the only solution I've found is to wait a couple hours and it will eventually stop, or to turn off the monitor and wait for an extended period of time.

It also seems that different colors artifact differently. For example, if I have a window with a dark background, it seems to be partially transparent and show details behind it, whereas a white background window does this less.  The flickering seems less bad when there is more white color on the display.

Once the flickering starts, it appears to continue even if I disconnect the display from a computer and do a self-test. This seems to be something problematic with the display itself.