title: Angular 4 material chips placeholder not working properly
body: <p>I was trying to implement angular mat-chip with selectable and removable options. But issue is the placeholder move to top at the time of loading. i m not sure what wrong i am doing on code. Please someone help me to fix this issue. </p>
  
  <p>Added GIF below</p>
  
  <p><a href="https://i.stack.imgur.com/Rouiv.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/Rouiv.gif" alt="enter image description here"></a>
   my code is</p>
  
  <pre><code>&lt;mat-form-field&gt;
    &lt;mat-chip-list #chipList&gt;
      &lt;mat-chip *ngFor="let keyword of keywords" [selectable]="selectable"
               [removable]="removable" (remove)="remove(keyword)"&gt;
        {{keyword}}
        &lt;mat-icon matChipRemove *ngIf="removable"&gt;cancel&lt;/mat-icon&gt;
      &lt;/mat-chip&gt;
      &lt;input placeholder="Keywords"
             [matChipInputFor]="chipList"
             [matChipInputSeparatorKeyCodes]="separatorKeysCodes"
             [matChipInputAddOnBlur]="addOnBlur"
             (matChipInputTokenEnd)="add($event)" /&gt;
    &lt;/mat-chip-list&gt;
  &lt;/mat-form-field&gt;
  </code></pre>
  
  <p>and <strong>ts</strong> is</p>
  
  <pre><code>  visible: boolean = true;
    selectable: boolean = true;
    removable: boolean = true;
    addOnBlur: boolean = true;
    separatorKeysCodes = [ENTER, COMMA];
    keywords= [];   // At time load i need this to be empty
  
  
  public add(event: MatChipInputEvent): void {
      let input = event.input;
      let value = event.value;
      if ((value || '').trim()) {
          this.keywords.push(value.trim());
      }
      if (input) {
          input.value = '';
      }
  }
  
  public remove(keyword: any): void {
      let index = this.keywords.indexOf(keyword);
      if (index &gt;= 0) {
          this.keywords.splice(index, 1);
      }
  }
  </code></pre>
  
  <p>i used same code which given on material document but only change i done is instead of loading array values i am passing empty array at the time load. Please someone help me to fix this issue </p>