This is a widespread and well documented phenomenon.

https://www.reddit.com/r/AskElectronics/wiki/why#wiki_tingli...

> Apple support are utterly fucking useless and don't know about this.

That particular support person/bot may not have but the company absolutely does

I've never had this happen with a laptop but as a musician I've been zapped by a microphone a bunch... not an infrequent occurrence if you play electric guitar and sing at the same time. Twice in the past year I've been hit during soundcheck at a gig because of bad grounding at a venue. Last time my solution was to plug everything into the same outlet via a power strip but I invariably end up off-kilter for a few minutes after being electrocuted through my mouth as I'm about to play :-(

This also happens with iPhones. And under the right circumstances you can feel the same tingling sensation on skin contact as well if the other person is holding a plugged in iPhone.

I'm startled they put a metal earth pin on the type-G adapter for that plug that does nothing.

That's additional cost just to make it look like it's grounded when it's not.

Shouldn't this be a UL/CE certification issue?

I have no expertise in this: but it could be one of the cells in the battery is performing worse than the rest. The way charging works in a pack is that it measures all 4 cells for instance, and if one is higher than the others it discharges that one only, then continues on charging them all at once, then periodically checks again

I get this sometimes, but not all of the time on my newish (6 month) Asus 14 laptop with a UK 3-pin to mains power supply. And I've had it with other laptops in the UK. It's mysterious, but don't think it is going to kill you.