CDJ 2000nexus Phase Meter

I've only just noticed this but the phase meter is out of sync of some tracks.

I mean, every 1st beat should be the 1st red phase meter bar but half way through some tracks the 1st red bar would be on the 2nd or 3rd beat.

Having said that, I didn't set a cue point as I normally do which is why I havn't noticed it before.

I presume then in order to have the phase meter in sync with the music, there has to be a first cue point?