This issue has been bothering me for a long time after updating OS to 4.2.2. I have not been using the app since then, and happened to know that the restarting playback issue was resolved for 184.108.40.206. I downloaded 220.127.116.11, and it seems that the problem has not been solved correctly. The playback still goes back to the beginning when trying to move the seekbar. I am using Samsung Galaxy Nexus (GSM) (also called maguro).
Customer support service by UserEcho