I use a number of browsers. One reason is that it (tries) to keep their caches separate. Naïve, I know - but it (mostly) works. However, when it doesn't, I'm curious why.
So, I'm watching a YouTube video in Chrome, and then decide to Bing for some fact using Edge. I open Edge as a new instance (no previous ones extant) and start to type the desired URL - and then notice that there's already an additional tab with the YouTube logo. When I click on it, it is literally the same video as what I'm watching in Chrome.
It's repeatable, so not a fluke. This may already be a 'thing', but I don't watch this sort of intrusion - so apologies for rearing a dead horse. My curiosity is piqued by the idea that the two browsers are supposed to be independent, yet obviously aren't. Can anyone explain this effect?