I was about to ask. One of my two modules is glitching like this. I’ll upload a video in a bit. I’m going to swap them around and try some things to confirm if it’s the one module or something else.
EDIT: Here is a video of it happening on mine:
The glitchy gets much worse as the brightness is reduced. Right module appears fine. Note, this happens with any color effect, not just the one I am demonstrating.