Offiline Sync'ed Tracks Pause on iPhone When Network Drops

[matpearsons]

When on the train listening to offline Sync'ed tracks and the iPhone goes into an area of non-mobile coverage the Track briefly pauses when the network coverage is lost and again when it comes back, it is very annoying! 

What is more annoying is this has been going on for ages, one Spotify release will do it, then the next release may not, then the next release will do it again.

What is going on?

Cheers

Mat