ID 548652 - Multires sculpting information is affected when adjusting paint weights and leaving set-up mode

Problem summary
Multires sculpting information is affected when adjusting paint weights and leaving set-up mode.
 
Customer reported version
Modo 16.1v7
 
Customer reported platform
Windows 11
 
Steps to reproduce
1) download the attached .lxo file and open it in Modo.

2) Navigate to the Setup and Rigging toolbar, and select the Weighting tab.

3) Ensure the Show Weights option is enabled, then select the 2 Shape and Skeleton Joint in the Items Viewport.
 
4) Enable Setup Mode, then press the Erase button, and erase a part of the Weights.
 
5) Leave Setup Mode and observe the meshes for changes.
 
Expected behavior
Multires sculpting information should not be affected when adjusting paint weights and leaving set-up mode.
 
Actual behavior
Multires sculpting information is affected when adjusting paint weights and leaving set-up mode.
 
Workaround
Saving before exiting Setup mode, or reopening the file are potential workarounds for this issue.
 
Reproduced by Support in:
Modo 16.1v7 - Windows 11, macOS 11.7 Big Sur
Modo 15.0v1 - Windows 11, macOS 11.7 Big Sur
 
Earliest version tested
Modo 15.0v1 - This issue appears to be in all tested versions of the product.