WorldPosition node in PostProcess material return wrong value on mobile(IOS/Android)

I used fog of war plugin on ios but no visible view showed. I create a new project with simple mat show the bug again.
the first image is it works on pc,

the second one is on ios preview.

the mat implementation as that

I upload the .usset file and the .Copy file, I wonder which will work corrently on your project, obviously it used Starter Content.
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I this the World Position Node cause this bug, I know it fixed in normal mat on 4.13, but maybe Post process material has this problem also.

Fog of War system is nessery for my project, I hope it will be fixed soon or you can tell me a way another.

DesperateZero with greatful

Wihout any response?

Is anyone can tell me whether it’s no need fix or can not recurrent this problem?

Hi DesperateZero, Unfortunately I haven’t been able to reproduce the “Works on PC” image. When I create a new project and import your assets on PC, this is what the scene looks like, which is the same as how it appears on iOS.

Have you tried contacting the creator of the plugin you are using?