'Collection "@schematics/angular" cannot be resolved.' error on --list-schematics

[appimpact]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• xi18n
• run
• config
• help
• version
• doc
• schematics

Is this a regression?

This is the first time we are using this CLI.

Description

--list-schematics is returning an error when trying to list all schematics available in @schematics/angular or @angular/material package.

However, schematics are working as expected when we use ng generate, i.e.:
ng g c test-component => generates new blank component
ng g @angular/material:table --name test-table => generates new material design table

Schematics CLI is installed globally with the following command:
npm install @angular-devkit/schematics-cli -g

🔬 Minimal Reproduction

🔥 Exception or Error

C:\Tests\Schematics\app>schematics @schematics/angular: --list-schematics
Collection "@schematics/angular" cannot be resolved.

🌍 Your Environment

Angular CLI: 10.0.6
Node: 14.5.0
OS: win32 x64

Angular: 10.0.9
... animations, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, router
Ivy Workspace: 

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.1000.6
@angular-devkit/build-angular     0.1000.6
@angular-devkit/build-optimizer   0.1000.6
@angular-devkit/build-webpack     0.1000.6
@angular-devkit/core              10.0.6
@angular-devkit/schematics        10.0.6
@angular/cdk                      10.1.3
@angular/cli                      10.0.6
@angular/flex-layout              10.0.0-beta.32
@angular/material                 10.1.3
@ngtools/webpack                  10.0.6
@schematics/angular               10.0.6
@schematics/update                0.1000.6
rxjs                              6.6.2
typescript                        3.9.7
webpack                           4.43.0

Anything else relevant?

[alan-agius4]

Do you have node_modules installed in C:\Tests\Schematics\app?

Also, any reason why you are using both the Angular CLI and Schematics CLI?

[appimpact]

All packages are installed.
ng generate is working correctly, so it is only --list-schematics that is not working.

Schematics CLI was installed to be able to use "schematics" from command prompt.