Make mouse back button close tab when unable to go back

[mr-cheffy]

What feature would you like to see?

Currently, when I open a new tab or open a link in a new tab, pressing the back button has no effect. It would be a helpful feature to allow users to easily close tabs without needing to move the cursor to the tab bar.

What platform are you seeing the problem on?

Linux

Additional context

No response

~ Created automatically from issue: #442

[fulldecent]

Not just close tab. This should specifically go back to the tab which caused to the closing tab to be opened.

Or in other words, if you put a sticker on the left side of your screen (and didn't know what tabs are because sometimes navigating will be in the same tab or sometimes it will be in a new tab) then the back button would do the same thing whether you got to that page by new tab or not.

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Supporting this feature will achieve parity with Arc.

[mbugbee]

This would an awesome add. I was using an extension to add this functionality but it seems to no longer be working for me.

[LaserKaspar]

Very similar to this if not the same! This would be a great addition.
#5911

[Wabuo]

I just found a Firefox add-on that kinda provides this service.

It's not perfect, but for me, it's good enough.

https://addons.mozilla.org/en-US/firefox/addon/back-to-close-we/