ID 361894 - Sculpt meshop can become corrupted when additional meshops are applied to the mesh item.

Problem summary
Sculpt meshop can become corrupted when additional meshops are applied to the mesh item.

Customer reported version
modo.n/a

Customer reported platform
windows7

Steps to reproduce
1) Open Modo.
2) Open the attached scene.
3) Expand the "example" mesh item to reveal the sculpt meshop and mirror meshop.
4) The mesh should be smoothly sculpted. toggle the visibility of the mirror meshop on.
Result: The mesh will be corrupted.

Workaround
Unknown. 

Reproduced by support
This bug has been reproduced in:
12.1v1 - Windows 10, OSX 10.13.5
12.0v1 - Windows 10
11.2v3 - Windows 10
11.2v1 - Windows 10
11.1v1 - Windows 10
11.0v3 - Windows 10
10.2v4 - Windows 10, OSX 10.13.5

Earliest version tested
10.2v4 - Windows 10, OSX 10.13.5 - This issue appears to be in all versions of the product
Expected behaviour
The mesh should not be corrupted by other meshops.

Actual behaviour
The sculpting meshop becomes corrupted when other meshops are enabled.