I'm on a Macbook Pro 13 (mid-12, not retina), macOS High Sierra. I spilled a few droplets of water (actual water) and my left arrow key decided to stop working. That's fair. Then I thought i don't use the right-alt key, so I tried to remap it using Karabiner-Elements. It didn't work (it was still registering as alt). BUT when I remap it to the right arrow key, it works!! I honestly don't know why that's the case. So I thought it could be a software issue, restarting the computer, and going into another user account (that's newly made) didn't help.
Oh and trying other keys also doesn't work. And I also tried an hidutil command and that didn't work. So I don't think the problem is from Karabiner.
So is there a reason why "softwarely" remapping the key wouldn't work?