Akali Disconnect Bug [GAMEPLAY] [TWISTED TREELINE]

Playing as Akali (I was using the silverfang skin , idk if it is relevant) on The Twisted Treeline co-op vs AI (maybe it goes for normal games too but I haven't tested it), and buying an item such as Long Sword , Amplifying Tome or Blasting Wand or presumably any item that doesn't build from another item will disconnect you from the game. I tried it about 5 times and it always disconnected me. But if you buy a big item such as Hextech Gunblade won't disconnect you. I didn't test it out with more items because the disconnect started to annoy me. Please fix , love you riot <3