iOS Render Texture issue

I am having an issue with render textures not properly rendering. Has anyone experienced this or know how to correct it?

This is how the RT looks in-editor and in WebGL



This is the same RT, no changes, on iOS. The image flickers like it's z-fighting itself but there's no other textures in the scene, just a red sphere to be seen by the RT camera.


Information about my setup:

Unity 2018.2.14f1.
Running this on an iPhone X and iPhone 6.
Quality settings are set to very low.

Main Camera


Render Texture Camera:


Canvas:

 

I solved this issue by removing the Metal graphics API from the graphics API list.