Material is not visible in android build but works fine in editor?

The material added to the UI Panel is working in editor window but not working in android build.

Editor Screenshot : Android screenshot :

Note :

1. I have tried adding shader to"always Included shader" list in project setting menu. still not fixed.

2. I'm not altering the shader/material in the code.

3. This is worked fine in previous unity version. (my unity version is 2018.3.11f1)

4. The same material works fine in other game objects (like cube, etc,.), but not works with any other UI (like buttons, canvas, etc.,)

Help me to fix this! Thanks in advance.