I need to point this out every so often: Sometimes when you come to this blog, it may appear to you that the embedded videos are in all the wrong places; that my intro to one of them leads into a different one. Every once in a rare while, I actually make that mistake. But if they all seem to be wrong, the problem is on your end. You need to flush out the cache on your browser.
The cache is where your browser stores downloaded data and text and files and stuff. Once in a while, they get clogged with Too Much Information. They aren't purging themselves properly and become confused as to what goes where, especially with websites that you visit repeatedly. This is true to varying degrees with every browser — Safari, Microsoft Edge, Mozilla Firefox, Google Chrome, Opera, etc. You should know how to do this manually with your browser. If you don't, this might help.