I have tested v5 on a Windows 11 laptop a few times, and sometimes the whole screen seems to "glitch out" when I move the mouse around. I tried poking at it a bit today to see if I could spot any repeatable patterns. And found if I Disable the BPM generator and switch to the "Input/Output" tab, it glitches the most and also was the only way I could get it to "stop" in the glitched state so I could get a screenshot. To get it to glitch, I left-clicked on the "Actions" menu, and then simply moved my mouse cursor up and down within the Actions menu.
My best way to describe what I'm seeing is that it seems like the mouse cursor is attempting to interact with something behind the Actions menu while at the same time updating the Actions menu and failing to complete a full "repaint" of the screen in the process. There are almost always black triangles showing on a mostly-white screen when I can catch it in action; otherwise it just looks like the entire screen is briefly flashing white and then back to the normal dark-mode look and feel.
Here's one screenshot of how it looks: