Loading don't show in Android 5

I have this code:

showLoader() {
    this.loaderToShow = this.loadingCtrl.create({
      message: 'Autenticando...'
    }).then((res) => {
      res.present();

      res.onDidDismiss().then(() => {
        console.log('Loading dismissed!');
      });
    });
  }

and in android 6+ works perfectly, but in Android 5, don’t show the loading.

any ideas to solve it

Regards

Which Webview/Chrome version does your android 5 device has? Maybe you are missing some polyfills for promises? Do you get any error in the console?

Not is a error, because work fine in Android device 6, 7, 8… but not work in a Android device 5 dont Display dialog loading