[GAMEPLAY] Trinket Bug

May be a bug with multiple champs but I have only seen it happen on Blitzcrank twice so far. When starting the game Blitzcrank bought the ward trinket, walked down the lane and it disappeared. As soon as he recalled and touched the fountain, it automatically bought the ward for him and it reappeared. It wasn't put on cooldown or anything. The next game, the same thing happened.