(help) How to create asynchronous navigate tap action?

[BjornPython]

I want to wait for an async call before navigating.

I am doing:

type: custom:button-card
name: call living room
tap_action:
  action: custom
  multi_calls: |
    [[[

        const wrapperFunction = async () => {
        const delay = (ms) => {
          return new Promise(resolve => setTimeout(resolve, ms));
        }

        await hass.callService(
        "rest_command",
        "call_tablet",
        {}
        );

        await delay(1000);
        window.location.href = 'https://xxx.xxx.xxx/dashboard-overview/calls?call=101#call-popup';
      }

     return wrapperFunction()
      
    ]]]

this works perfect in the web, but for companion app, it opens the link in the default phone browser. I want it to behave like the areas card, wherein when you click it, it just switches to that area tab.

using command_webview does reroute it to the specified path, but completely ignores the #call-popup in the URL.