UV issue on device (ipad) but not in editor

A couple of object in my level shows UV erros on the ipad , the UV on part of the static mesh appear to be streched. I have checked the material setup in both cases , one of them is using a UV cord and the other are just using the default mesh UV.

What could of the cause of this ? This only appear on build on the ipad , not in the editor.

Thanks

Can you try disabling Metal in your IOS Project Settings? We have just seen a Metal only issue with stretched UVs in one case. We are investigating it soon.