PWA popup inappbroswer can not work in Facebook app


The problem:
when PWA opened in Facebook app, it does not allow popup inappbroswer with close button like chrome, when inappbroswer page is opened , there is no way back to the main app.

I am wondering what is the best solution Options:

  1. add a top bar with back button in inappbroswer like iframe (possible?)

  2. change all inappbroswer to iframe with navigation control at the bottom, but some website blocked iframe showing their sites

  3. any ?