Song titles not scrolling in "Now playing"-window in iOS 7

I've updated to iOS 7 (iPhone5), but now some song titles don't scroll across the screen on the "Now playing" screen, even if they're too long. They just cut off. For some reason this issue pops up completely randomly, not always happening for the same title, i.e. if i reshuffle a playlist, a title that previously didn't scroll will now scroll across the screen and others won't. furthermore, sometimes long titles will scroll across the screen only once and then stop and get cut off again.

I really don't understand how or why this happens, since, as i said, it happens completely randomly. I've also been able to reproduce this problem on another iphone5 with iOS7, so this problem isn't just exclusive to my device.

Any ideas?