ID 374217 - Any Falloff that can be assigned with a Texture Item results in partially redrawn Properties panels when switching between the Falloff and the assigned Texture Item

Problem summary
Any Falloff that can be assigned with a Texture Item results in partially redrawn Properties panels, when switching between the Falloff and the assigned Texture Item in the Item List. When switching to other items in the list, the assigned Falloff Texture Item is still actively selected. 

Customer reported version
Modo 12.2v1

Customer reported platform
MacOSX 11.13 

Steps to reproduce

1) Open the attached scene. The scene contains a Procedural Mesh and a Falloff assigned with a Texture Item. 

2) In the Item List, expand the Falloff to display the Texture Item.

3) Switch between these two items a couple of times.

4) The Properties panels for the items have now been partially redrawn. The Falloff Texture Item is still actively selected when switching to other items in the Item List. 

Workaround
Resize the Properties panels for the Falloff and the assigned Texture Item attributes to reappear. 

Reproduced by support

This bug has been reproduced in:
Modo 12.2v1 - MacOSX 11.13 - Windows 10 - Windows regression
Modo 12.1v2 - MacOSX 11.13 
Modo 12.0v1 - MacOSX 11.13  - Mac regression  

Unable to reproduce bug in:

Modo 12.2v1 - CentOS 7 
Modo 12.1v2 - Windows 10 
Modo 11.2v3 - MacOSX 11.13 

Earliest version tested
Modo 11.2v3 - This issue no longer appears in this version and has regressed. 

Expected behaviour
The Properties panels should be fully redrawn when switching between a Falloff and the assigned Texture Item in the Item List. 

Actual behaviour
Properties panels are occasionally only partially redrawn when switching between a Falloff and an assigned Texture Item.