Users upgrading to 1.20 may not receive updates for some apps
Pre-1.20 the client would update an app whenever a compatible higher version was available from whatever repo. Now, only the preferred repo will be used for updates. This is mostly fine for new users, but existing users may find themselves in situation where they unexpectedly don't receive updates anymore.
Example scenario:
- user installed transportr (or newpipe) from fdroid repo
- user added izzy's repo because of some other app they want from there
- izzy's repo has higher priority than fdroid.org (because was added later on old client)
- after upgrade to 1.20 transportr (or newpipe) will only be updated from izzy repo, but there it has an incompatible signature
On the app details page, we even show an update button and the currently installed version in the versions tab, so even there, it isn't obvious that this repo won't be offering updates.