Call of Duty: Warzone Players Are Going Invisible Again Using Red Doors - Kotaku

Glitches cycle in and out of Call of Duty: Warzone like stray cats through an abandoned house, but invisibility has caused players more headaches than most.

YouTube is already filling up with videos claiming to show players how to exploit the latest versions of the invisibility bug, including the one that uses red doors.

For the red door invisibility glitch specifically, players need to cook a grenade, grab an ATV or dirtbike, and travel through the red door portal nearly simultaneously.