ID 524271 - Mari can stop responding while exporting 3 UDIMs via Export Manager

Problem summary
Mari can stop responding while exporting via Export Manager in a specific project
 
Customer reported version
Mari 5.0v2
 
Customer reported platform
Windows
 
Steps to reproduce
 
1) Download and extract the attached project

Or

Create a new project from geometry with 3 UDIMs (generate at least 3 default Channels)

2) Open the Export Manager

3) Set a valid Export Root Path
 
4) Click Export Current
 
5) If Mari does not freeze, repeat steps 2-4
 
Expected behaviour
The Channels should be exported.
 
Actual behaviour
Mari freezes and does not recover around 50% of attempts.
 
Workaround
Unknown.
 
Reproduced by support
This bug has been reproduced in:
Mari 5.0v4 - Windows 10
Mari 4.8v4 - Windows 10
Mari 5.0v1 - Windows 10 - regression

 

Unable to reproduce the bug in:

Mari 4.7v7 - Windows 10
 
Earliest version tested
Mari 4.7v7 - The issue no longer appears in this version and has regressed.