Ok now I know that this isn't the best bug report but well I can't record things so this is the best I could do. If you would like please get on and test this. So the glitch (not sure if it's in all pvp arenas but it's in arena 2 for sure) is if you have the horseman kit, you can click on an iron sword if you kill someone and you get that kit, armor and all. Same with potions. If you click on a potion and your a horseman, you get a full set of potions and armor. People can abuse this by using the potions and clicking on the speed potion to refresh their potions. This happens with every kit and I'm not sure what happens if you click on a diamond sword or piece of armor since I haven't had diamond on a horse recently. If you can't tell in the screenshots I have a regular horse kit and when I get a potion, I can have the potion kit. Sorry if this is unclear but as I said before, I don't have recording programs.