I have an iPod touch which I use for Spotify offline mode with sync'd tracks. Even with offline mode engaged and wifi off, each time I access spotify I get a pop-up asking me to Turn off Airplane mode or use-wifi to Access Data".

Meaning before switching tracks etc., it bugs me to turn on wifi and I have to press the OK button.

This is not a 30 day Spotify connection error, it happens every time I access spotify even if a song is playing via spotify and I click the home button then return to spotify, or if the screen has gone to sleep and I have to enable the screen via the home button or power button and swipe to unlock.

Surely this is a bug and Offline mode enabled should disable this nagging pop-up.