A total of 146 competitors from China and overseas took part in the five-day tournament, which adopted the latest UCI rules that each team is composed of two cyclists.
Ibrahimovic had the chance to complete his hat-trick in the 63rd minute, but he ballooned the ball over the bar with the goalkeeper well beaten.
After the restart, Esteghlal were quick to cement their place in the Round of 16 with a third goal, as Karimi supplied a chipped cross from the edge of the penalty area for Cheick Diabate, who guided his header past Al Owais to make it 3-0.
It wasn't until the 104th minute that Bayern finally sealed the win, thanks to a header from substitute Javi Martinez.
The only down side for the capital-based team was that Renato Augusto limped off with an injury and the Brazilian is suspected of suffering a muscular problem.
"Our organization regrets the inconvenience that the suspension of the match may cause to the Mexican football federation (Femexfut) and thanks them for their willingness and patience in recent days," read the Fedefutbol statement.
"We are not the ones making the decisions," Flick said when reacting to UEFA's announcement to stick to their plans of allowing a crowd in the Puskas Arena.
It will be Wague's second loan in two seasons after he spent last season playing for Nice in France.
A few weeks ago, Union Berlin striker Sebastian Polter was suspended following a corona-based wage dispute.
The result at the Beira-Rio stadium meant Gremio jumped to second in the group's standings, equal on points with Internacional but with an inferior goal difference.
The Organizing Committee worked closely with the International Olympic Committee (IOC), the International Paralympic Committee (IPC), International Federations (IFs) as well as PyeongChang 2018 and Tokyo 2020 organizers and foreign experts for their expertise in event organization, track design and other areas, demonstrating Beijing's 'opening' gesture.