At the first I should say, you must choose a better title in your post. "kill own team" is totally confusing. Better if it is "Cops can kill each other".
https://mikescnr.com/forum/index.php/topic,5439.0.htmlSecond, Did it just happen once to you and you started reporting it? You must be sure if it's a bug or not.
Third, you need to provide us a video of this happening.How did that happen, where did that happen, what did you do before it. These are basic bug reporting questions and you must answer them.
You also said "I think it's desync or just mobile bug". Many people play on mobile. They don't have the same problem. I've seen this "Cop killing cops" many times. That happens whenever a cop is desynced. Not a bug at all.