Is that why you can be reported or banned in Rainbow Six Siege?

I'm a regular Playstation 4 player and played a round of Rainbow Six wins today. I played Fuze. I also did my kills until I was killed in the round. We won the round, but in a funny way. When only one enemy was alive, one of my allies killed him. Above right was not that he killed him but I even though I was already dead and had nothing to do with it. The kill even counted for me. At any rate, I was later killed by my allies all the time. Is just stupid that such a thing has happened but I'm still wondering why that happened and whether I have to plug in a spell or report. Does any of you know what was the cause of how I got the kill and whether you can even be banned or reported for that? I would be very happy about an answer.

Which symbol appeared at the death message? It may be that you punched the opponent and he bled out. In any case, you have done nothing wrong and can't be punished in any way. Your ally but already: Team killing is prohibited and, if it occurs more than once in a match, leads to consequences. (Reversed Friendly Fire). Otherwise, you can report it in addition or contact Ubisoft Support. They will then take care of a just punishment. LG (4 years r6 experience)

All right 😉