Try the "Auto tab discard" extension. It allows me to have hundreds of tabs "open" and (in combination with Tree Style Tabs) largely blur the line between "browser sessions" and "bookmarks".

Far better than bookmarks.

Bookmarks do not store click history, the trajectory you took to arrive at the page. With tabs, the contexts is a backbutton away.

Haven't had that happen, but what I have had happen is that I open in a new tab, and it just displays this spinner in the middle of the window while on the tab. It never loads. I take the URL from the address bar and drag it into yet a newer tab and there it loads. Then I close the original new tab. Sometimes I gotta do that a few times for the thing to load. I tend to open in new tab with middle click, if it makes a difference.

> I open in a new tab, and it just displays this spinner in the middle of the window while on the tab

oh, that happens too, all the time - I just got so used to immediately do "right click -> duplicate tab" in that case that it stopped bothering me

but tabs forgetting url causes this trick to fail (and yours too, there is no url to copy!) - so that's a pain point