If you try to download video lU4vv7qCQvg on a variety of #Invidious instances, some (most?) redirect you to a realtime player instead of serving up the file. Those instances that cause the wrong action work correctly for other videos.

works → https://invidious.fdn.fr/watch?v=lU4vv7qCQvg

broken → https://iv.ggtyler.dev/watch?v=lU4vv7qCQvg