Which @angular/* package(s) are the source of the bug?

Don't known / other

Is this a regression?

Yes

Description

When a component has a button with click handler and ngIf it won't be destroyed after user click

Please provide a link to a minimal reproduction of the bug

https://github.com/s3141p/Ng-leak

Please provide the exception or error you saw

No response

Please provide the environment you discovered this bug in

Angular CLI: 12.1.1
Node: 14.15.1
Package Manager: npm 6.14.8
OS: linux x64

Angular: 12.1.1
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1201.1
@angular-devkit/build-angular   12.1.1
@angular-devkit/core            12.1.1
@angular-devkit/schematics      12.1.1
@schematics/angular             12.1.1
rxjs                            6.6.7
typescript                      4.2.4

Anything else?

To reproduce:

1. Clone the repo
2. ng serve
3. Click on To B Component link
4. Click on B button (!! Important step)
5. Make Memory snapshot
6. Click on To A Component
7. Run GC
8. Make Memory snapshot

Last snapshot will show that BComponent wasn't destroyed.