Many years ago they had an offical extension called “Tab Center”, it had been in “labs” for some time. When it finished testing (it worked well), Mozilla decided to drop it instead of deploying it in Firefox. It wasn’t even in low priority.
It took them many years and they finally implemented vertical tabs in 2024.
That was the move to Firefox 3.0, wasn’t it? Back when major Firefox releases were actually major and not just minor changes to a few tertiary features.
I’m pretty sure that upgrade killed more addons than every update since then combined. It took years for some of them to return.
Many years ago they had an offical extension called “Tab Center”, it had been in “labs” for some time. When it finished testing (it worked well), Mozilla decided to drop it instead of deploying it in Firefox. It wasn’t even in low priority.
It took them many years and they finally implemented vertical tabs in 2024.
I remember using an extension for that in like 2008 or something.
And I remember them disabling the features that extension required to function.
That was the move to Firefox 3.0, wasn’t it? Back when major Firefox releases were actually major and not just minor changes to a few tertiary features.
I’m pretty sure that upgrade killed more addons than every update since then combined. It took years for some of them to return.