ID 469646 - Hydra Viewer doesn't apply material to all UVs / UDIMs

Problem summary
Hydra Viewer doesn't apply material to all UDIMs, and displays black for textures when UDIMs are available on the mesh items.

Tested with Alembic , FBX, and OBJ files.

Steps to reproduce

1) Download the attach Nuke script and geometry files into one directory
2) Open the script and view the different Viewers

Expected behavior
For the Nuke 3D renderer and Hydra to be the same

Actual behavior
Hydra renderer only renders the first UDIM:

​This bug has been reproduced in:

Nuke 13.0v2 - Windows 10, CentOS 7

Nuke 13.0v1 - Windows 10, CentOS 7
 

Unable to reproduce the bug in:

Nuke 12.2v5 - Windows 10, CentOS 7

Earliest Version Checked:

Nuke 12.2v5 - This feature (Hydra Viewer) was not available in this version