Had a UDN question from a licensee about full precision not working on Metal. According to Dmitriy, the Mobile / Use Full Precision flag is not being passed to Metal shaders
Deploy the attached project to a metal capable iOS device.
Ensure the cubes show different levels of accuracy (see attached image)
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-41253 in the post.