https://www.gamespot.com/articles/destiny-2-warlock-glitch-wont-be-fixed-before-the-/1100-6455791/

Destiny 2's seasonal event, The Dawning, is underway. As part of that, the Mayhem mode has made its debut in the game for a limited time. Unfortunately, it's become a playground of destruction for Warlocks as a result of a glitch, and Bungie has now announced that it won't be fixed before the events ends.