Iframe / Webpage-Card issue

Model Name: IPhone 13pro
Software Version: ios15
App version: 2022.3

**Home Assistant Core Version**
2022.3.5

When I use the official lovelace card [iframe/webpage](https://www.home-assistant.io/lovelace/iframe/) in the companion app for ios, only the following content is visible (and do nothing else than show the loading screen):

The following is configured in lovelace:
```
- type: iframe
url: /media-browser/media_player.buro/xxx
aspect_ratio: 110%
```

With the same configuration it works in the desktop browser and in all ios browsers (safari & co) :

I tried it with different url (internal/external). Unfortunately the same effect. The same error is also shown with this lovelace configuration (only always in the ios companion app):
```
- type: custom:button-card
show_name: false
icon: mdi:play-box-multiple-outline
tap_action:
haptic: heavy
action: fire-dom-event
browser_mod:
command: popup
title: Media Browser
hide_header: false
large: false
card:
type: iframe
url: /media-browser/media_player.buro/xxx
aspect_ratio: 100%
```

'Crossside tracking' in the ios systemsetting for the companion app is enabled.