[native-stack] fullScreenModal and stackAnimation: flip hangs app

[ivopatty]

Current Behavior

I have the following navigation structure

• Main native stack navigator
  • Welcome Screen (this is the initial route)
  • Sign In Screen
  • Sign Up Screen

So I've set up SignUp Screen to navigate with the options options={{headerShown: false, stackPresentation: "fullScreenModal", stackAnimation: 'flip'}}

Succesful paths:
Welcome Screen -> Sign In Screen -> Sign Up Screen
Here I can move between screens no problem and sign in normally

Steps to reproduce
Navigate from Welcome Screen -> Sign Up Screen
Any buttons or navigation actions hang or ar not executed

This similary applies to actions executed that change the navigation tree. So when removing all screens in the stack to replace them with the authenticated screens

software	version
iOS or Android	iOS 13
@react-navigation/native	5.0.7
@react-navigation/native-stack	5.0.5
react-native-screens	2.0.0-beta.10
react-native	0.61.4
expo	36
node	v12.14.1
npm or yarn	yarn 1.21.1

[WoLewicki]

It looks like the same issue as #436. It should be resolved with #438. I am closing it. If it is not the same issue, feel free to comment to reopen.

[ivopatty]

@WoLewicki In my testing #438 has not resolved the issue. Please find a reproducible example for my problem here: https://github.com/ivopatty/modal-flip-reproduce-example

This affects my simulator on 13.4 and 12.4 as well as my iPhone Xr @ 13.3.1

Thank you!

[WoLewicki]

It looks like I made a mistake by adding the check in the wrong method. Try #441 and please tell if it fixes your issue.

[ivopatty]

That does indeed fix the issue! Thank you so much :)