Camera is active, and scanning is working, but the camera not displaying on video

[fzn0x]

Browser: Firefox 81.0.1

Relate to #241
js : https://rawgit.com/schmich/instascan-builds/master/instascan.min.js

my source code :

//preview box
<div class="box">
     <div class="box-body ">
         <video id="preview"></video>
     </div>
</div>   
// init
<script src="{{ asset('js/instascan.min.js') }}"></script>
<script type="text/javascript">
    let scanner = new Instascan.Scanner({ video: document.getElementById('preview') });
    scanner.addListener('scan', function (content) {
      console.log(content);
    });
    scanner.addListener('active', function (content) {
      console.log('active');
    });
    scanner.addListener('inactive', function (content) {
      console.log('inactive');
    });
    Instascan.Camera.getCameras().then(function (cameras) {
      if (cameras.length > 0) {
        scanner.start(cameras[0]);
      } else {
        console.error('No cameras found.');
      }
    }).catch(function (e) {
      console.error(e);
    });
</script>

No errors found in console.log but the camera display not showing .

Do we need to adding the camera display by ourself?

[ThuTa707]

Same error is having here. Camera is active but camera is not displaying on video. Do you have any answer??