Spotify acts weird when on weak and unstable connection. If you search for a track, the app gets sort of stuck and says that it is not connected to any network, when in fact it is. Typing the track over and over into the search bar does make it refresh, but that is inconvenient in my opinion.
Some sort of refresh button (sliding over the "top" of the screen would be fine too) when looking for new daily podcasts. New tracks take forever to load into the list of tracks of any podcast, but again, typing the name of the podcast into the search box and tapping its label or icon does force it to look for new tracks.
Also, song or podcasts get stuck too, they just pause and do not try to resume streaming for unreasonable periods of time. It sometimes resumes when I unlock my device over and over.
Other streaming apps seem to be handling poor connection better. I often use low quality option in the settings too.