A screenshot from the Hypixel server, because I noticed it first there.
Some elements like fonts (named entities) and enderchest aren't rendered correctly in Anaglyph as you can see.
they are way to far apart: unlike the background which is rendered correctly, I can see each letter twice through the glasses, same goes for the enderchest, I see both of them

I attached a screenshot

If you need further info, or can't reproduce the issue, then pls message me back