Sync issue with Quantize on

Hi.

Here is the scenario I am having issues with.

2x XDJ-1000 (MK1) are connected via LAN to the PC with rekordbox 5.3.0. ProDJ Link is active. Player 1 has a 16 Beat Loop running perfectly Beat gridded. Quantize value is 1 Beat.
Track on Player 2 is beat gridded as well.

I am starting the other track at the end of the Loop of Player 1. What I can see from the Phase Meter is that sometimes the Phase Meter is not in sync like I wouldn't have Quantize off and started the Track early or late.

Even if it would be in sync, it goes off within the next 16 beats.
To be clear - I am talking the display of the Phase Meter, not the sound. The sound is off too but just wanted to ensure it hasn't something to do with the beatgrid. Even if the beatgrid wouldn't be perfect on track 2, the phase meter should be in sync with Quantize On even if the sound is off. Right?

I checked it in Standalone mode as well and it seem to be there as well.

Right now I am experiencing this with just a specific track. Doesn't seem to be a general issue.

I probably will re-analyse the problematic track to see if it makes a difference...

Does anyone has an idea or similar issues?

Thanks