I've noticed that when I am in spectator mode and I fly into a minecart that is moving on a track it stops the minecart as if i was in survival or creative, which i assume should not be affected by me flying into it. My request is for the minecart to continue on its way if you fly into while it is moving. Ive noted that the minecart doesn't start moving again once you bump it after it has stopped. Not sure if this applies to every type of minecart but in my instance it is affecting minecart hoppers with blocks directly above the tracks.