ID 514377 - Large differences in Ptex Face Resolutions can occur on subdivided Objects

Problem summary
Large differences in Ptex Face Resolutions can occur on subdivided Objects
 
Customer reported version
Mari 5.0v2
 
Customer reported platform
Linux
 
Steps to reproduce
 
1) Create a new project using the attached .obj

2) In the New Project dialog, change Mapping Scheme to Force Ptex and click Create
 
3) In the Ptex Creation options, ensure Autosize is set to Worldspace Density

4) Subdivide the Object to Level 2
 
5) Create a Procedural node (e.g. Wood)
 
6) Bake the Procedural to a Paint node
 
7) View the Paint node 
 
Expected behaviour
The Face resolutions should be close to uniform.
 
Actual behaviour
Faces that, since subdividing, now stretch to cover more area of the model appear to have lower resolutions than faces that have a similar coverage before and after subdividing:
 

 
Workaround
There are a few different methods that can be used to reduce the difference in Face Resolutions: