ID 583646 - Particle Modifier Node does not edit Particles as expected when used with an Alembic particle system

Problem summary
Particle Modifier Node does not edit Particles as expected when used with an Alembic particle system.
 
Customer reported version
Modo 16.1v8
 
Customer reported platform
Windows 11
 
Steps to reproduce
 
1) Download and open the attached file in Modo.

2) Edit the Scale of the Particle Modifier in the Schematic Viewport.

3) Observe the visual artifacting in the 3D Viewport.
 
Expected behavior
There should be no visual artifacting when altering the Scale of the Particle Modifier.
 
Actual behavior
There is visual artifacting when altering the Scale of the Particle Modifier.
 
Workaround
Unknown. 
 
Reproduced by Support in:
17.0v8 - Windows 11, macOS 11.7 Big Sur
15.0v1 - Windows 11, macOS 11.7 Big Sur
 
Earliest version tested
15.0v1 - This issue appears to be in all tested versions of the product.