This issue has been happening for almost 1 year for me. My internet connection is sometimes disconnected for 1 to 5 seconds. And among those times, this bug occurred.
After being back to the game, the hero keeps moving back to the spot where I was disconnected. As you see in the following screenshot:
imgur com/a/snm6K0X
my hero (Junkrat) kept moving back to spot on his left even though I tried clicking on somewhere else.
Replay: drive google com/file/d/1F_q25on3Bz5prhn82s69VNEtKLTkBjZO/view?usp=sharing
Timestamp: 4:45