What’s your most hated teammate behaviour?

Where do I begin?

• Ping spam: Self explanatory.
• Quip spam on the dropship.
• Dropping solo for no reason.
• Two teammates knocking themselves and boosting each other for revives and respawn challenges/badges while you fight 1v3 all game. 
• Constant rushing. Sprinting to new areas and expecting to be followed without pinging or warning.
• Shooting my Caustic traps down!! STOP that! 
• Late dropping, and going backwards into a hot area where it's blatant that other teams have already landed and are locked up and deeply entrenched in battle.
• Lifeline not healing the team and forcing you all to use meds instead.
• Spamming "I need light ammo" etc and punching you because they can see you've got a light gun too. Bro, maybe I've also got 20 ammo, leave me alone. If I had enough I'd give you some proactively. 
• Punching me off edges that I can't easily get back up on for no reason. 
• Taking items you've dibsed with plenty of time.
• Ring-lurking for "easy kills" without warning but getting caught in the ring, or getting downed in the ring, before spamming the ping and expecting me to sprint 200m into the ring for their banner.
• Loot goblinism: Snaking items from right under me, or from a lootbox I've just opened when it's clear that I'm rooting through my inventory to shuffle some stuff around.
• Playing solo and dropping with two people who are friends/partied up, and them never pinging or sharing with me because they're telling each other things and holding onto items for each other instead.
• Teammates not joining fights THEY started. They've entered an area alone, started a fight, I've run in to try and help and bail them out, and they've used my distraction to run away and leave me for dead.
• Teammates both sat watching and teabagging my death box, letting my respawn timer count out, so that they can loot my stuff. Yeah, seriously.
• Pinging gold items to show off what you've found, and picking them up. I don't care if you find gold stuff unless you want to pass it onto me. Don't tag a Kraber if you're just going to pick it up, ffs.
• *-poor positioning and awareness. Sitting on a ridge at the edge of the ring with ten seconds to go, now pinned back by two separate teams, but being absolutely oblivious to the fact that I've been hammering the "Let's go here" ping for the last two solid minutes, to get us into a strong position ready for end-game.
• Thirsting and f-ing around when it's the final circle, or final squad. Teammates seem to get a rush of blood to the head and lose all ability to be aware of their surroundings the ring location, and the importance of holding the strong point in the last circle. Had a 3v1 earlier but my teammates got complacent and stupid, and both decided to go for glory individually by chasing the solo guy down near the edge of the ring instead of holding the only building left inside the ring. Both of them got downed one by one, and I had to salvage the win 1v1 - He was a very good player, my teammates underestimated him and almost threw the game because of idiocy and impatience. When you hold the ring, waiting and letting someone come to you is 99.9% of the win. 
• Entering long range engagements with enemy snipers and giving away our position using an SMG or another equally short ranged weapon.
• Cheaters. Happens all the time, almost every game.

There are so many more but this felt good to get off my chest.