HTTP Basic Auth broken with new add repo ui

• Device OS and version: Android 12
• Device model/manufacturer: moto g31w, Motorola
• F-Droid version (in the About screen): 1.21.0-alpha0 (but also stable version broken)
• F-Droid privileged extension version (if installed): -

What did you do? (clear steps if possible)

Add repo -> (+) -> manual url insert (see screenshot)

What did you expect to see?

basic auth login screen

What did you see instead?

exception screen (see screenshot)