I have a 2017 15" MacBook Pro. Today I noticed that in the bottom right of the lower case, to the right of the trackpad, when touching that area with one's hand or fingers, a palpable electric static effect can be felt. It's kind of like when your hair stands up when you go near a static-y blanket. If I touch it for more than a few seconds, it feels like a small shock. I asked someone else to feel it to see if it was just me, and they also confirmed it feels that way on that side. However, this only happens when the laptop is plugged in and charging. It's feels normal/no sensation when it is not plugged in. Normally, when the computer is plugged in and charging, it's because it's on my desk where I use it with the lid closed with a monitor and mouse/keyboard, so I wouldn't notice it. This is one of the few times where I have had it plugged in someplace else, hence me noticing it. No idea how long it has been like that. Any ideas? Thanks.