Bro, this is called induction current
If you touch the type c tip with tester you will be surprised to see light glowing
I had this issue with ip-15 pro Max and the beauty is if you insert type c cable in the ip-15 pro Max as the body is metal the full will have the induction now
What I found out is there will be an induction current on all devices but our body will not have any harm touching it sometime we will get the shock kind of feel
So now I have moved to plastic build 2a plus 🙂