Not this season though, they've been given different instructions on offside this season, the lino's have been told to flag rather than wait for 5 minutes, he got it wrong, but as there is a signal for a flag to the referee, he responded to it, as they have been told to do, so he blew the whistle, and everyone stopped, even coutinho heard the whistle but did the old trick of shooting, but it didn't matter, as soon as the whistle went, the game stops.
I get it's a poor decision from the lino, but the referee had reacted, so it's not a disallowed goal.