In Firefox you can also middle click the reload button to duplicate the tab.
Edit: other things you can middle click:
The back and forwards buttons: does, what the buttons do in a new tab, while duplicating the tab history.
The new tab button: open a new tab directly after the current tab (and in the same container as the current tab).
Items in the URL bar (such as autocomplete suggestions, the thing you just typed, or your frequent pages): opens them in a new tab (at the end though for some reason)
You can also Ctrl+click all of these for the same result.
In Firefox you can also middle click the reload button to duplicate the tab.
Edit: other things you can middle click:
You can also Ctrl+click all of these for the same result.
You forgot the most important thing:
Links
Middle clicking a link will open it in a new tab which is what I mostly use.
I’m more of a Ctrl + Left-Click man myself. And yes, it’s because I fuck up the middle click 50% of the time and turn on page scrolling.
Also middle clicking on a tab will close it, no need to hunt for the little x.
Holy shit, I didn’t know that. That’s going to be so helpful.