[2] FINA Bureau members held a vote by email for a replacement host city, with the majority voting in favour of bringing forward Budapest as host city for 2017, and re-running the bidding process for the 2021 edition for the Championships.

[3] The 2021 championships were eventually awarded to Fukuoka, Japan, and were scheduled to be held between 16 July and August 1, 2021.

To avoid a clash with the postponed 2020 Summer Olympics the event was rescheduled to be held between 13 and 29 May 2022.

However, in January 2022, it was announced that the event in Fukuoka would be postponed a second time to 14–30 July 2023 due to the health impacts of the Omicron variant and the pandemic measures in Japan.

[4] A week later, on 7 February 2022, Hungarian Prime Minister Viktor Orbán and FINA President Husain Al-Musallam announced an agreement for Budapest to hold an extraordinary edition of the FINA World Championships from 18 June to 3 July 2022 with the press release stating: "Budapest is set to hold a FINA World Championships from 18 June – 3 July 2022, a move that ensures athletes have a global aquatics championship to target in the summer of 2022.