PVRTC texture is sampled as white when the uv value is very close to 0

When the uv value is very close to 0 ( < 0.001 ), the boundary value of the PVRTC texture is sampled as white. please refer to attached images and sample project.

problem goes away when changing the texture format to ASTC 

1. unzip attached sample project
2. open project with UE 4.27.1 on Mac
3. select IOS provision and certificate
4. package for IOS development
5. deploy to any IOS device

expected : Shading color on IOS device should be same as IOS preview on Editor

I am not able to find world outliner how to enable it?

How to achieve HLSL Multiple Render Target in Material blueprints?

How does UMG set overlapping layouts?

Undefined sysmbol: typeinfo for AActor when cross-compile linux dedicated server on windows

What properties of the progress bar can be used for drag and drop highlighting?

What property of the Slider is the image used when dragging?

Bonjour j'ai un petit problème c'est que je ne vois plus l'onglet "scability" pour changer les graphismes de uefn et j'ai pas trouvé l'option pour le faire revenir ?

How to properly terminate the DoWork thread function in FAsyncTask?

When I open UE4 4.24.3 it appears that. Does anyone know how to solve?

An error occurred while trying to generate project files !?