This has been happening since the beginning, I just kept putting off posting. When I vote on a comment inside a post, the vote disappears if I fold the parent comment or if I scroll far enough that the voted comment goes offscreen. Sometimes the second attempt at voting sticks, today that isn’t working. The video shows the second attempt at voting on these comments.
I figured it must be just me since nobody else posted about it but maybe it’s not just me?
Thanks for letting me now about this! I fixed the issue today, and I’ll be releasing an update either tonight or tomorrow.