Windows 7, Firefox ESR 52.xx
I play a video in Youtube. If I stop the play just before it gets to the end, and back out of full-screen mode, there's a menu of other videos down the right side of the screen. I click one of those to watch next. The screen changes, and displays the new video title below the view window -- but the video in the window is still the one I already watched.
If I click reload, I then get the newly-selected video and I can watch it.
This just started happening a couple of weeks ago. How can I fix it so that when I select a video, that's what I get?