https://www.pcgamer.com/treyarch-vows-to-stop-team-killing-in-black-ops-4s-blackout-battle-royale-mode/

Judging by James, Chris, and Tyler's impressions, Call of Duty: Black Ops 4's battle royale mode, called Blackout, sounds like a lot of fun—but it's not without problems. Many players have complained about team-killing, and argued that being able to pick up your teammate's loot after shooting them in the back just encourages people to go rogue. Treyarch is listening, and says that it's one of many issues it's set to address during the beta.

On Reddit, it said that it agreed that you shouldn't be able to loot teammates you've killed, and that a fix was on its to-do list. It said it will also continue to ban players for intentional team-killing, and encouraged players to report bad behaviour through the mode's social menu.