After joining a friend's game using Steam's friend list, I tried to reach Cherno from Elektro, running without any loot.
I passed Cap Golova swamps, south Prigorodki, when my character instantly teleported to the east side of then, freezing my game and forcing to ALT+F4.
I reconnected, then joined again my friend's match, then ran again to our meeting place in Cherno; when we met he took me to a building to let me get a backpack, when the same bug happened and I freezed teleported to swamps again, in a more western spot.

Only happened twice in a row. Quite ruining matches ofc but still Alpha. {F29273}