bug: modal doesn't dismiss when backdrop is clicked on IOS

Bug Report

Ionic version:

[x] 5.x

Current behavior:

On IOS, ion-modal does not dismiss when backdrop is clicked even though backdropDismiss is set to true.

Expected behavior:

ion-modal should dismiss when backdropDismiss is set to true.

Steps to reproduce:

Open a modal which has backdropDismiss set to true and click the backdrop.

Related code:

Template

    const modal = await this.modalController.create({
      component: ItemModalPage,
      cssClass: 'item-modal',
      backdropDismiss: true,
      showBackdrop: true,
      animated: true,
      componentProps: {
        item: item,
      },
    });

CSS

.item-modal .modal-wrapper {
  top: 40%;
  bottom: 0;
  left: 0;
  right: 0;
  position: fixed;
  display: block;
  border-radius: 2px;
  min-width: 100%;

}

Other information:

As mentioned above, this only seems to happen on IOS

Ionic info:

Ionic:

   Ionic CLI                     : 5.4.13 (/Users/chris/.nvm/versions/node/v12.9.0/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 5.1.0
   @angular-devkit/build-angular : 0.1000.0-next.3
   @angular-devkit/schematics    : 10.0.0-next.3
   @angular/cli                  : 9.1.4
   @ionic/angular-toolkit        : 2.0.0

Cordova:

   Cordova CLI       : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms : android 8.1.0
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.1.3, (and 7 other plugins)

Utility:

   cordova-res : not installed
   native-run  : 1.0.0

System:

   Android SDK Tools : 26.1.1 (/Users/chris/Library/Android/sdk/)
   NodeJS            : v12.9.0 (/Users/chris/.nvm/versions/node/v12.9.0/bin/node)
   npm               : 6.14.4
   OS                : macOS Catalina

[chris-cornwall]

Sorry for that and thanks very much for the solution!

[ionitron-bot[bot]]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.