Iframe with webpage brings up Action Sheet but select not working


I have this page with an iframe that loads a webpage in ion-content. This is working fine.

      <div style="width: 100%; height: 100%; border:0px;"   >
        <iframe style="width: 100%; height: 100%;" src="http://anywhere.com" ></iframe>

On that webpage there is a select, tapping this brings up the Action Sheet(i haven’t written any code for that).
But when I tap/chose from the Action Sheet, nothing happens.
If I then tap on the webpage, the value will show in select and the Action Sheet closes. Even if I tap the button the value will “send” to the next page. - so it basically works - BUT.

The user experience I not good, what I want is that the value is changing in the select when I tap it in the Action Sheet as it does when I tap the webpage.

Any suggestions?

Btw. I have tried this with the inAppBrowser and the problem is the same.