Shader does not work with URP + Android

Hello everybody! There is a problem. Stumbled upon a tutorial on the Internet where you can implement hiding UI objects behind a special shader, but here's the problem, it doesn't work with URP + Android, although everything is ok in the viewport.
It should be

How it looks in build

I did this tutorial:
https://medium.com/@cuilongchang/un...i-object-behind-a-transparent-ui-2700c12372c1


I attach shaders:
TransparentCoverShader.shader
TransparentHideShader.shader