Cordova InAppbrowser executeScript triggers site reload

Question

I have this weird problem with iOS Cordova.

What I do is opening a new InAppBrowser with this line:

app.ref = cordova.InAppBrowser.open(url, '_blank', 'location=no,toolbar=no');

I listen for the loadstop event with this line:

app.ref.addEventListener('loadstop', app.loadStopFunction);

The loadStopFunction looks like this:

function loadStopFunction () {
    console.log('loadStopFunction')
    app.ref.executeScript({
        code: `1+1`
    });
}

This, unfortunately, triggers a side reload and that results in an infinite loop (because the loadstop event is triggered repeatedly.

When I do the executeScript later it works and no infinite loop is triggered:

function loadStopFunction () {
    console.log('loadStopFunction')
    setTimeout(function () {
        app.ref.executeScript({
            code: `1+1`
        });
    }, 350)
}

Any idea what could be wrong?

I do not have much experience with Cordova or even iOS, so there will be information missing I'm sorry.

package.json shows me this values:

...
"cordova-ios": "^4.5.5",
"cordova-plugin-inappbrowser": "^1.7.2",
...