From transport failures to playing the wrong national anthem, the Aichi-Nagoya Asian Games have seen their fair share of mishaps as they approach Sunday’s closing ceremony.

But the latest controversy over how fans express their support has drawn a different kind of attention to the Games’ restrictions on political messages, with even the organizer’s adviser raising eyebrows.

At a baseball game between Chinese Taipei (Taiwan) and China on Friday, a spectator was stopped from displaying and waving a towel bearing the word “Taiwan.”