Rewire Slave Sync (beat One Does Not Always Equal Beat One)

Ableton Live appears to behave differently when rewired to Renoise than it does when rewired to Pro Tools. Loops loaded in Live always start at beat one when I begin Playback in Pro Tools on beat one. The same is not true when Live is rewired to Renoise.

Is there a difference noticable between using PDC or toggling PDC off?