vtkOBJReader - use material string break reader handling of UV

I have noticed OBJ with the following types of string in them will break the OBJ reader

mtllib mesh.mtl
usemtl material0000
usemtl material0001
usemtl material0002
usemtl material0003
usemtl material0004

The points position are fine but the UVs that are read in are all getting assigned with UV coordinate of (-1,-1)

Anyone else noticed this ?

I am using VTK 9.2.2 compiled statically on Ubuntu 18.04