title: Angular router - routes to a weird route "?mat-radio-group-0=true"
body: <p>I have this close button in my HTML template which fires a close() function in the component:
  HTML template:</p>
  
  <pre><code>       &lt;div&gt;
            &lt;label id="radio-group-label"&gt;Please specify: &lt;/label&gt;
            &lt;mat-radio-group
              fxLayout="row"
              aria-labelledby="radio-group-label"
              class="radio-group"
              formControlName="flWholeDay"
            &gt;
              &lt;mat-radio-button [checked]="wholeDayLeave" value="true"
                &gt;Whole day&lt;/mat-radio-button
              &gt;
              &lt;mat-radio-button [checked]="!wholeDayLeave" value="false"
                &gt;Part day&lt;/mat-radio-button
              &gt;
            &lt;/mat-radio-group&gt;
          &lt;/div&gt;
  </code></pre>
  
  <p>HTML button:</p>
  
  <pre><code>&lt;button mat-raised-button fxLayoutAlign="center center" color="accent" (click)="close()"&gt;Close&lt;/button&gt;
  </code></pre>
  
  <p>Component:</p>
  
  <pre><code> close() {
      this.router.navigate(['/something']);
    }
  </code></pre>
  
  <p>The problem is when the button is pressed it routes to <a href="http://localhost:4200/something?mat-radio-group-0=true" rel="nofollow noreferrer">http://localhost:4200/something?mat-radio-group-0=true</a> 
  Where is this odd thing happening?</p>