Suffix issue when deleting a part of it

[nicorivat]

🐞 bug report

Is this a regression?

No

Description

Hey guys ! I'm currently facing an issue with the suffix. When I select all my value and a part of the suffix and I press delete, the non-deleted part of the suffix is added to my ngModel (or form).

🔬 Minimal Reproduction

https://stackblitz.com/edit/angular-ivy-mask-a3brvs

Steps to reproduce:

• Type (for example) "10A" in the input.
• Select from the start to the middle of the suffix.
• Press delete or backspace key.

🌍 Your Environment

Angular Version:

@angular-devkit/architect 0.1001.2
@angular-devkit/build-angular 0.1001.2
@angular-devkit/core 10.1.2
@angular-devkit/schematics 10.1.2
@angular/cdk 10.2.1
@schematics/angular 10.1.2
@schematics/update 0.1001.2
ng-packagr 10.1.0
rxjs 6.6.3
typescript 3.9.7

Anything else relevant?

I have cloned the repo, found a fix and try to push a branch to make a PR, but unfortunately I don't have the permissions required.

[NepipenkoIgor]

@nicorivat Hi . Thank you for request an issue. We will look but if you want to open merge request you should fork repo and then open request from you fork.