I change throw grenade key to T, it doesn't work

T is my grenade key for many years. It’s weird other keys are working (I’ve tried “X” and “mouse 5”), only “T” is not working, even the system hint asks me to use “T” to throw a grenade.
I’m sure there’s no other action on this key and my keyborad is fine as well.


I think the problem is “T” key cannot be assigned to any action, I’ve tried some, it’s only working on “move forward”.
Please fix this issue !

I’m having the same problem, I play ESDF and have G mapped to use (instead of w).
So I’ve tried using T or Y for throw grenade, both don’t work.

I’ve now mapped it to a mouse button (on the side of my razer mouse) and that works. Not ideal though