Angular [routerLink] breaks routes by replacing slash with %2F code example

Example: Angular [routerLink] breaks routes by replacing slash with %2F

[routerLink]="['/articles', article.slug, '/edit']"
 
 this route produces: /articles/some_slag/%2Fedit
 
 simply remove leading slash from 'edit' and you get:
 
 /articles/some_slag/edit