I noticed that in Mozilla history, lots of signs of watched You Tube videos have changed, others did not. What's the difference between them +what does it mean?
https://support.cdn.mozilla.net/media/uploads/images/2017-06-25-05-26-57-5eb2de.png Look at the image. It shows what I mean and what I need to know.
https://support.cdn.mozilla.net/media/uploads/images/2017-06-25-05-26-57-5eb2de.png
Look at the image. It shows what I mean and what I need to know.
