Several Baggies players appeared to be waiting for the referee’s whistle when the full-back curled into the top corner from the edge of the area after Bernardo Silva had been flagged offside before cutting the ball back to his compatriot.
City’s celebrations were muted, but a VAR check proved the midfielder was onside and the goal stood.
Guardiola admitted he can sympathise with West Brom’s frustrations and will be speaking to his own players to remind them of the importance of playing to the whistle.
“I understand the complaints from the West Brom players and the manager,” he said at his post-match press conference.
“I understand completely, but with this rule you have to follow the action until the end. Don’t stop because with VAR it can be disallowed.
“You have to continue. It is a good lesson for us. In the next few days we will speak about it.
“Today it happened to West Brom, but it could happen to us.”
Watch the manager's entire post-match press conference in the video above.
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