Toon Outline shader from Unity Team not working in build (mobile)

I wanted to create outline shader for my game, without the need to change every material to use that shader.
That's where this tutorial comes in handy. I did everything from the video and got it all working, unfortunately only in editor. Whenever I build my scene and launch it on my phone, there is no outline effect. I know that this shader works and is included in my build, because checking "Outline only" in SobelFilter material makes everything white with outline. Again, works in editor, in build however entire scene is white and there is no outline.

 

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