'Recently added' playlist not syncing correctly from iMac to iPhone 5.

I only sync my 'recently added playlist' from iTunes to my iPhone 5.

Occassionally it does not show the sync correctly. The music goes on (under artist, songs, albums etc.) but in the 'Playlists' section it only shows a few of them.

I have tried re-syncing numerous ways ; taking off music completely, syncing, putting it back on etc - but still no avail.

Sometimes you can see it correctly but as soon as the sync is done, the playlist icon thumbnail flashes and changes, and most of the music information is gone.

(However the songs do remain on the phones hard drive and are visible under albums, artists and songs as mentioned above.)

Its not a big deal, but seems to be a bug in ios7 as ive not experienced it before that. Just wanted to feedback to Apple, and see if anyone else was experiencing it.

Cool.

iMac 21.5 inch Mid 2011 to iPhone 5 (iOS 7.0.4)

iTunes 11.1.3 64 bit