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

Don't known / other

Is this a regression?

Yes

Description

On a brand new Angular 13 project, the coverage report show unreliable data.

Create a brand new Angular 13 project
npx @angular/cli@13 new ng13

Add an emtpy method to app.component.ts

Inside the project, run tests with coverage data:
ng test --no-watch --code-coverage

Report is broken as the uncovered code red sign is misplaced and coverage summary is wrong:

For comparison, this is the correct one for Angular 12:

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

No response

Please provide the environment you discovered this bug in

Angular CLI: 13.0.1
Node: 14.18.1
Package Manager: npm 6.14.15
OS: linux x64

Angular: 13.0.0
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1300.1
@angular-devkit/build-angular   13.0.1
@angular-devkit/core            13.0.1
@angular-devkit/schematics      13.0.1
@angular/cli                    13.0.1
@schematics/angular             13.0.1
rxjs                            7.4.0
typescript                      4.4.4

Anything else?

No response