title: ng2-pdf-viewer - does not display automatic pdf
body: <p>I have an angular application 8 that I receive a pdf file from the API.
  In the angle view, I took the pdf file as a blob and converted it into a FileReader to use the byte array.
  I am facing the following problem, the pdf only appears on the screen when I click on the page or scroll the screen. I have already tested several properties of ng2-pdf-viewr and nothing worked. I want the pdf to be displayed on the screen as soon as I upload it.
  Can anyone help me with this problem?</p>
  <p>component.html:</p>
  <pre><code>&lt;pdf-viewer 
      [src]=&quot;fileReader.result&quot; 
      style=&quot;display: block;&quot;&gt;
  &lt;/pdf-viewer&gt;
  </code></pre>
  <p>component.ts:</p>
  <pre><code>private actionsForSuccessDownloadFile(data: any, tipo: string) {
        this.blob = new Blob([data], { type: tipo });
  
        // Blob -&gt; ArrayBuffer
        this.fileReader.readAsArrayBuffer(this.blob);
        this.loading = false; 
  }
  </code></pre>