Board Thread:Versus Debates/@comment-30323490-20180607192958/@comment-6769189-20180725180036

@namikaze: shino figured out Tobi used a time-space ninjutsu when he tried to cover him in his bugs right after the Itachi fight.

Everyone understood what Kamui was a time-space ninjutsu, they just didnt have a counter for it the way Minato did. Once they figured out that Kakashi's Kamui and Obito's technique were the same one they started countering him a lot.