That's indeed a valid point. But remember that worst case scenario just a tingling feeling. The V isn't what's dangerous, it's the current.
During my electrician training I got 430V in me (low current, why I'm still here...). Now I know what a bottle of soda feels like.
For the record, I'm not saying electricity is safe. I'm saying that frmo what I'm reading, this is normal behavior.
It's best to leave it as it is, before someone tries with their own solutions, which may harm other people in the same building, or worst case kill.
I've run non grounded outlets for about 20 years in my home now.
What I'm saying is that non grounded outlets are believed to be dangerous is very overexaggerated.
I don't mean to insult you, that wasn't my intention. And I'm sorry for that if that's what it looks like.
All the best!