Wiggle Transform error depending on Repeater's settings

Steps to reproduce:

1. Create a shape layer
2. Draw a shape on it
3. Add a Repeater
4. Animate the Copies gong from 0 to, say, 10
5. Ensure the Repeater's Composite is set to "Above"
6. Add a Wiggle Transform with a Wiggles/Second of 0 and set its position to, say, 100,0

 
Result:

As each extra shape appears, the already-drawn shapes move around

Expected:

Shapes already on screen shoudl remain in place. If you change the Repeater's Composite to "Below", the shapes do not move - this is "as expected" behaviour. Adjusting the Wiggle's Random Seed does not help.

Attached project shows the issue - change the Repeater's Composite to Above or Below to see the difference.
 
System info
    Application: After Effects (Beta) v25.4.0.30
    OS: Windows v10.0.19045, RAM: 127.91 GB GB, CPUs (logical): 32