The only app that doesn’t auto-update for me is Fdroid itself (ironically), because it targets an old Android version. Running Android 14 on a Pixel, so with the strongest Google fuckery.
Are you sure your Fdroid client is up to date? The new API was implemented in 1.19, and apparently I even misremembered and all you have to do to enable Fdroid to auto update its apps is to manually update them for one last time (so no fresh installation required).
Another long shot: there’s an option to force the old installation method hidden in expert settings - maybe you could check if that isn’t enabled?
Maybe developers will finally start implementing predictive back now that it’s not hidden behind developer options. It’s kinda nice when you can just peek at where the app wants to take you when you go back, and it currently ironically tends to be implemented only by apps that already have decently made navigation.
Also private space seems nice, finally a way to use the work profile sandbox natively without having to install third party apps that pretend to be work profile managers.