Played a MP game as guest with 2 other players on PC.
We encountered a few tanks with the new challenging mortar proximity grenades. We started noticing that the proximity grenades/mines appeared all around us after we killed the tank. It was like the grenades had been launched during the battle but failed to appear directly.
So after looting the tank they started to appear around us. We cold blow most of them up but some where glitched and just lay around.
I guess the host spec is most important but mine was Win10, 32GB RAM, GTX 1080TI 4K game play.