Epic Games made a Reddit post and Tweeted out that Rifts are being temporarily disabled in all game modes until a fix is found but never gave the glitch/bug that has forced them to disable it.
After looking around on Reddit and YouTube, we’ve discovered that using two ATK’s with your team mate, creating a platform under a rift, and then both players driving into the Rift are the same time would grant “god mode”, one player will be transported onto the map as usual, but the other play is stuck in the air, in the storm taking no damage. The player doing the glitch will be shown as not having any health, you won’t be able to spectate the, but they are above the island taking no damage, making it impossible to kill the player, leading to an easy win due to the other players taking storm damage when the storm circle closes in.
Check out the video below for a detailed explanation: