Stable behavior for in-app iframe

Hey all,

So we’ve been porting a mobile web app for a client to Ionic, and we made some good progress and would like to release it. The thing is there is a good chunk of functionality that hasn’t been ported, and it is a hassle to switch from the ionic app to the browser during a workflow.
I tried to embed an iframe and route the screens that haven’t been ported to a full-height/width iframe that contains to desired functionality from the old web app.

It does seem promising, but it is highly unstable, some clicks are mishandled, events are not fired, and stuff like that.

Any thoughts on simple ways to make the in-app iframe more stable?