Attached is a file created with Rhino 5. Just a simple box with the default stripe material applied. ApplyUvwTransform returns false, but the UvwTransform seems to be used in the viewport. It returns true after I change the values.
I have noticed that the same file works OK when opened with Rhino 6. Can you confirm that the bug is fixed in Rhino 6? And what about any possible updates for Rhino 5?