Object using specific Corona Material Import by default with wrong UVs

This is not a regression,repro in 4.21

 

Repro Step

1) ** Open scene scene attached in 3Ds Max.

2) View simple Window. Open Material editor

3) Using the Eye dropper , Click on the windows.

4) Notice this is a Multi-Sub Corona Material ( see image)

5) Go to file export using Datasmith

6) Open Unreal

7) Import Scene

--> Notice that the Windows have a strange look , UVs are all messed up.

8) Click on window static mesh 

9) Click on Mesh Editing tab

--> Notice the Mesh correct itself .

10) Close Window , Notice that the windows Issue in the viewer is now fixed....

 

--> Link for file here :[Link Removed]