Merge pull request #2372 from dpalou/MOBILE-2995

MOBILE-2995 qr: Fix camera not stopped and black screen in iOS

src/app/app.scss

@@ -1287,5 +1287,9 @@ ion-app.app-root {
     ion-content, ion-backdrop, ion-modal:not(.core-modal-fullscreen), core-ion-tabs {
       display: none;
     }
+
+    &.ios .ion-page.show-page~.nav-decor {
+      display: none;
+    }
   }
 }

src/providers/utils/utils.ts

@@ -1534,6 +1534,7 @@ export class CoreUtilsProvider {
         // Hide camera preview.
         document.body.classList.remove('core-scanning-qr');
         this.qrScanner.hide();
+        this.qrScanner.destroy();
 
         this.qrScanData.observable.unsubscribe(); // Stop scanning.