Being pulled in an fight can happen, should not normally but it can.
For example if an Mob gets in an fight, the Player somehow leave the fight an you are in aggro range sometimes it jumps on you.
Just run out of range an forget about it.
Looting is personal if you are in an group some loot is for you and some for everyone, you then see every personal unclaimed loot if you are looting,
in open world, solo, if you click on one loot mark ever loot in reach get on that point that can look confusing but your loot don't get stolen from anybody.
For the thing Ziost, if you are an subscriber i would recommend to write an bug report, it at least sounds a lot like one.
@Ahrngrim, that's how I've always understood loot to work, yes. It was why it surprised me so much when that box with "group loot" popped up when I was playing solo and that other player jumped into my fight at the last minute, completely uninvited. There was no reason group loot should have been offered in that case and no reason that other player should have had any credit for my kill.
I am not a subscriber currently so I can't submit a ticket in-game but I do hope someone from EA will take notice and make sure it doesn't happen to other players.
