While playing a game of elemental vs my friend for a large portion of the game I was unable to view his side of the island because Gandolf came out of nowhere and told me I could not pass.

It seems that the NPC somehow became invincible, since I could not attack him and he prevented me from going around because there is no way to. This is also coupled with the problem of while playing the multiplayer, issuing move commands becomes very painful:

if you end your turn and you click on a tile to which you want to move, you cannot on the next turn click on the same tile and have your character move there until you end your turn and your character moves there on his own(not sure if it was intended.)

You also do not get any clues that you cannot move pass this character (the path is blocked or any such notice.