Starting a radio station on the Spotify Android app used to start an endless mode playing different songs everytime the radio was started anew. Now starting a radio station creates a fixed playlist and then plays the songs in the playlist and stops. Redoing the same step creates exactly the same playlist with the same songs.
This used to be a crucial feature for me as I don't want to have to interact with Spotify to create a constant stream of music.
(On Android) Go to Menu -> Radio
Scroll down and select e.g. "Rock" from the Genre stations
Observe that Spotify creates a fixed playlist which is started when clicking on "Play Radio"
Skip to the last song of the playlist and then skip to close to the end of that song.
After the song ends, playback stops.
I tried re-installing the app, deleting its data and even installed it on a different phone. But the issue was present on all attempts, making me believe that this is not an isolated problem on my phone but a serious bug in the radio feature.