Problem with arpeggiator sync in Logic

[onlinemusic]

Hi,
I'm having trouble getting Unique's arpeggiator to sync with the tempo and bar position in Logic 9.1.7 (although I've always had this problem with Unique, so I don't think it's specific to this revision of Logic) and Unique 1.2. Mac Pro, OS 10.6.8.

No matter what I do, the arpeggiator drifts from both the tempo and the bar line.

The drift occurs whether I have the trigger set to clock start or first note (even when first note is quantized).

Has anyone else experienced this problem, and are there any known solutions?

To reproduce:
Instantiate Unique on a software instrument track.
Create an 8 bar sequence.
Add 2 simultaneous notes at the beginning of the sequence
Drag the end points of the notes to the end of the sequence (so they are each 8 bars long).
Pick a simple patch, disable any effects in Unique.
Enable Arp on both Oscs, set trigger to Clock Start.
Enable Metronome.
Set the locators to loop the sequence, enable Cycle mode.
Hit play.
Listen to the notes slowly drift from the metronome. This will be especially noticeable when the sequence loops back to the beginning.

Thanks!