Yeah I think on the hit just happens sometimes, bad timing
Also yeah Lemmy is weird with thumbnails, basically if I upload a video and don't put a thumbnail I noticed way less people look at them and there's way more downvotes
But when I upload a thumbnail I think if you click on the thumbnail itself then Lemmy just makes the thumbnail bigger which is weird
TBH it'd be nice if Lemmy just grabbed a random part of the video and made a thumbnail out of it but it is what it is