BUG: @YouTube you have a bug that shows the comments from the original video put into the MiniPlayer when leaving MiniPlayer on a subsequent video. Seen when using FireFox on Win10-64.
i.e. Comments for video A show for the just played video B.
Okay, I'll try to get screenshots and detailed steps to reproduce. I have seen it at home (Win7-64) and work (Win10-64) and I use Firefox on both PCs.
Quite jarring/puzzling when you see politically charged comments from another video below a subsequent kitten video. 