> I say “stopped working”, but technically it works too well now, it is being pressed constantly, which makes the laptop pretty unusable.

I had this problem in my Framework. I fixed it by... holding the laptop upside down and mashing the offending key for several minutes. Didn't work immediately, but now you wouldn't tell that it was ever broken. I've managed to panic-order (~€80) another keyboard though, so now I have a spare.

For context a laptop keyboard is build like this:

https://www.iqsdirectory.com/articles/membrane-switch/membra...

This problem is caused by the layers sticking together. In the case of the Framework 16 the "d" key sits on top of a foam pad which in turn is placed on top of a heat pipe, so this area gets particularly hot under load. The layers are often made from PET, which starts softening anywhere in the range of 65-87C - so easily within range of a laptop heat pipe.

By mashing the key I was hoping to detach the layers and apparently it worked.

That being said for gaming I use an external keyboard now, because the one built-in is made by an external supplier and I don't think they'll start using a more heat-resistant material anytime soon.