Has anyone seen this?

[Monkeytwin11]

So I've now come across this glitch multiple times when playing levels, mostly just ones that I created, or other player-made, sort of crazy levels. I've seen it appear in proton, and oxygen sizes, and it doesn't go away until I refresh the page, even if I go out, and into another level. It appears to be an electron ring glitched to stay on the page. (As you can see it shows up on any of the pages, even the level selector.)