English bill and doing fine. Not to be a buzzkill or anything. All my teamkills were legitimately my fault and lack of consciousness.
I have seen a few loopy hitboxes though, "looked like" a thrust through a teammate with a pike, or a side swing that wrapped around and hit the dude behind the target, but could've been latency; nothing that could really be consistent or exploitable.
EDIT** Had a few swings I thought I blocked too, but again, probably just latency.