Strange appearances behavior

[rolandas_vegis]

Hello,

I have encountered strange behavior while working with appearances.

https://knowledge.autodesk.com/community/screencast/003815de-ca09-4f82-a133-2550ac596845 - link to the screencast.

As you can see in the screen cast, I apply HDF appearance to 2 components, however it is grey for some reason. Next I apply F01 appearance and it works fine.  Then I reapply the HDF appearance and it is still grey. When I delete an unrelated Paint appearance from the design, suddenly the components with HDF appearance are not grey anymore and show the correct colors.

https://a360.co/2Q5Al7M - Link to the model.

[goyals]

Just to get the more detail, Are you seeing this problem specifically to any material or in general? Is there any pattern you noticed when this problem happens? Actually I tried it on my side but not able to reproduced it so just want to understand it better. Thank you for your feedback.

[rolandas_vegis]

Actually it is just a few materials (attached the used adsklib). Is it possible something is wrong with them? Couldn't find what it could be though. Unfortunately I was unable to find the pattern as to how this happens, only happens on this model, on other models the materials work just fine.