About thumbnail display of masks

[UY320]

The thumbnail of the mask is displayed differently.
What is the difference between this?
I want the masked part to appear.
(I'm sorry if the sentences are strange because I'm not good at English.)

  

[yu26433436nb4d]

I got the same question!

[Cyril Dellenbach · Accepted solution]

Hi @yu26433436nb4d and @UY320,

Sorry for the delay in response.

This is an interesting question. The masks thumbnail depend on multiple things. First of all, if you are working with UDIM, Substance 3D Painter will automatically simplify the thumbnails (for optimisation).

On the other hand, if you're not working with UDIM you can switch options, under Edit>Settings>General>Layer stack options>Use simplified thumbnails