Unreal Studio 4.20.1 - Product Viewer Template - Strange Banding?

​​​​​​I have just started testing the latest Unreal Studio 4.20.1 and the Product Viewer Template is creating strange ‘banding’ across all geometry the further you get from it?
The ‘Blank’ template and older unreal files opened in 4.20.1 don’t appear to have this banding so it appears this only relates to the new Product Viewer Template?
I’ll attach some screen shots to clarify.
Does anyone know how to fix this or if it may be a bug?