I watch a few videos on Youtube using TB, all about the same or very similar topic. Let's say "topic x". Then I open a new window in TB, which then will use a different circuit for sites I'm visiting in that window. I watch some videos in this windows, about a different topic. But this time Youtube will list and recommend me videos about "topic x" on the right side in this new window. How does Youtube see what I watched in a previous window using a different Tor circuit?
I tried to use cookie manager addons and the built-in Firefox cookie manager, but none shows any cookies. How can I manage cookies in TB? How can I delete cookies set by a certain domain without closing and restarting TB?
Thank you for the help!