The previous thread was locked for some reason so I have started a new one (Mod: feel free to unlock that one and move this post there).
As requested by @Micah_Edelblut, I have found an app where autofill does not work with the Android beta, and I have to resort to the accessibility service of the stable app to fill my login details.
Device and app information
Device: Google Pixel 7 Pro
Android version: 14
Bitwarden beta version: 2024.7.3 (18938)
App: MoneySavingExpert
App version: 1.28.2