Tapping the send button too quickly can result in a canceled send or a double send

[Deykun]

https://deykun.github.io/diffle-lang/pl?r=QIpQGZy0SYsdmL1QGNtEmez5yM54yM50CZ6JmLmFDZx0ichBnLlVTLhtWduIjL3EjL04iMy4CNxETLhJXd6FGbnhSI

Submit cancellation is not an implemented feature, but it is possible and can result in bugs, like the one in the URL above.

It was reported here: https://www.hejto.pl/wpis/24-04-2025-flag-pl-diffle-difflepl-grywebowe-46-liter-w-8-slowach-large-green-ci?commentId=18366ede-f163-4d84-be84-35ada8626343