Ios App weird "go to page" behaviour

Hello everybody,
I am facing a weird problem on Ios with my app.

The context :
When my users opens the app through their iphone homescreen (after adding it thanks to iOS option “add to homescreen”), all the “go to page” flows that I have set up are opening an inapp browser.
The only way for them to close this inapp browser is to go back to the exact URL they added to their homescreen.

This result in a very strange feeling for the user.

Do you have a solution for this ?
Thanks
Robin