ID 536477 - UV Mask to Image Manager doesn't work if there are no active Channels

Problem summary
UV Mask to Image Manager doesn't work if there are no active Channels.
 
Customer reported version
mari.4.8v4
 
Customer reported platform
windows11
 
Steps to reproduce
 
1) Open Mari

2) Select Help>Create Example Material Design Project and open it

3) In the Patches palette, right click the patch 1001>UV Mask to Image Manager
 
4) Open the Image Manager, no UV mask has been created
 
Expected behaviour
For the UV Mask to be created in the Image Manager
 
Actual behaviour
Nothing happens
 
Workaround
If you create a Channel node, with all default settings and leave it disconnected to everything, then when you right click the UDIM 1001>UV Mask to Image Manager, the UV mask should get created.
 
Reproduced by support
This bug has been reproduced in:
Mari 6.0v1 - WIndows 10, CentOS 7.9
Mari 4.2v1 - Windows 10, CentOS 7.9
 
Earliest version tested
Mari 4.2v1 - This issue appears to be in all tested versions of the product