When I connect to my iPhone to my receiver via airplay to play Pandora, the music ends when my phone locks and the current song ends. Pandora will not automatically move to the next song and I have to re-connect via airplay. I never had this problem until recently. I noticed the Airplay icon has changed. It works fine when I'm able to connect with the square airplay icon but the issues arise when that icon is no longer there it it has changed to a circle airplay icon. 
