A lot of mistake judgement made by umpire. In the semi final match, there are at least 2 times challenge are rejected by umpire, first is on the Men's Doubles of Marcus Fernaldi Gideon & Kevin Sanjaya Sukamuljo (Indonesia) VS Li Junhui & Liu Yuchen (China) with score of 11-7 in second game, which China players requests for challenge, but umpire reject with the reason too late. The second is on Mixed Doubles of Zheng Siwei & Huang Yaqiong (China) VS Tan Kian Meng & Lai Pei Jing (Malaysia) with score of 9-5 in second game. which Malaysia players requests for challenge, but umpire reject with the reason too late again, this times clearly show that Malaysia players request for challenge immediately after the linejudge show their judgement.

In final match, a very serious mistake judgemet made by umpire, this mistake is on Men's Singles of Chou Tien Chen (Chinese Taipei) VS Anders Antonsen (Denmark) with score of 17-17 in second game.

Besides that, every year on Indonesia badminton event, the sound inside the Istora Gelora Bung Karno has been exceeded 85 dB, this is already a noise which can affect the hearing system of human. The noise never stop from beginning until the end of match, these already affect the player of the match. That are a few audience bring in the megaphone into the stadium, they use megaphone to incite audience to cheer until the cheer has become noise. How can the organizer allow audience to bring in the megaphone? This is a sport event, not a demonstration.

However, the organiser unable to solve this issue until now. In 2019, a very serios mistakes made by organiser, they unable to use the hawkeye in all the Round of 32 match and some Round of 16 match, this serious mistake should not happen in the major event in the year.

A lot of mistake has been make by organiser, but that is not any solution taken by organiser to improve it, hopefully BWF can request the organiser take the solution. If not, that will be a negative impact on promote for Badminton.