It seems as though AC Milan could have had another penalty on Sunday night in addition to the one awarded for the foul on Franck Kessie.
The Twitter account @erroriarbitrali believe there should have been a foul on Rafae Leao as he was kicked on the follow through of a missed challenge, and therefore the Rossoneri should have been awarded a spot kick.
Milan did end up getting a penalty that Ibrahimovic blazed over, but there must once again be questions asked regarding how observant the VAR system actually is.