Angular meterial UI icon visibility issue

[kenmadhu]

Describe the bug
Angular Material UI icons are not visible instead of that it's showing icon's attribute and it's value.

Note Commit-ID e486e74

To Reproduce
Steps to reproduce the behavior:

1. Launch browser
2. Open https://material.io/resources/icons/icon=book&style=twotone
3. Observe the icon's attributes.

Expected behavior
All formatted and all UI technologies should support.

Desktop (please complete the following information):

• OS: Linux [V 18.04.3]

[Sunwoo-Nam]

There is this issue with --enable-forking also.