react / react/react-native

<Modal> Component Not Appearing Correctly in Component Tree

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Component: Modal Issue: Author Provided Repro Platform: iOS Type: New Architecture
Dominant language
C++
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Description

Description

NOTE: This bug was NOT present on the old architecture. As soon as I set newArch: enabled, this bug appeared.
Another note: I did not file this issue in react-navigation because I reproduced this in react navigation v6 and v7 and this bug only was present on both versions. It only appeared when I set newArch: enabled and it appears to be related to the <Modal /> component.

The repro provided below should be very easy to reproduce (refer to videos).

I have a modal component like so:

// app/screens/ConfirmationModal.tsx
import { Modal, View }  from "react-native"
// ...

<Modal visible={showModal}>
   <View style={$fullScreenStyle}>

   </View>
</Modal>

And I trigger the setShowModal(true), it is actually appearing behind my screen (or just not at all) in the new architecture instead of above.

// My screen in my Navigator
<Stack.Screen
   name="RandomScreen"
   component={Screens.RandomScreen}
   options={{
      presentation: "transparentModal", // This line appears to be causing the collision with the Modal component
      animation: "fade",
   }}
/>

On the component tree, I have this Modal component at the very top, so this should definitely not occur.

Steps to reproduce
  1. Clone the repro: https://github.com/ChristopherGabba/Modal_Repro
  2. Run yarn install
  3. Run npx expo run:ios
  4. When the app loads, tap on Open Modal button.
  5. When the modal appears tap on the Green Show react native modal button

What should happen here is a green full screen modal should appear but nothing happens at all.

  1. Comment out this line:
// app/navigators/AppNavigator.tsx

  <Stack.Screen
     name="Modal"
     component={ModalScreen}
     options={{
          // presentation: "transparentModal", // COMMENTING THIS LINE OUT THE MODAL WORKS
          animation: "fade",
     }}
  />

Go through the same sequence and it works just fine.

React Native Version

0.76.7

Affected Platforms

Runtime - iOS

Areas

Bridgeless - The New Initialization Flow

Output of npx @react-native-community/cli info
error Failed to load configuration of your project.
Config Validation Error: "project.ios.unstable_reactLegacyComponentNames" is not allowed
    at parseUserConfig (/Users/christophergabba/.npm/_npx/270969bc0f7612b1/node_modules/@react-native-community/cli-config/build/readConfigFromDisk.js:48:11)
    at readConfigFromDiskAsync (/Users/christophergabba/.npm/_npx/270969bc0f7612b1/node_modules/@react-native-community/cli-config/build/readConfigFromDisk.js:63:10)
    at async loadConfigAsync (/Users/christophergabba/.npm/_npx/270969bc0f7612b1/node_modules/@react-native-community/cli-config/build/loadConfig.js:141:22)
    at async setupAndRun (/Users/christophergabba/.npm/_npx/270969bc0f7612b1/node_modules/@react-native-community/cli/build/index.js:191:14)
    at async run (/Users/christophergabba/.npm/_npx/270969bc0f7612b1/node_modules/@react-native-community/cli/build/index.js:146:5)
christophergabba@ChristophersMBP Modal_Repro %
Stacktrace or Logs
N/A
Reproducer

https://github.com/ChristopherGabba/Modal_Repro

Screenshots and Videos

Here is a video of it working correctly when the presentation: "transparentModal" is commented out:

https://github.com/user-attachments/assets/298942b9-5f64-4f81-840f-463bc6778a83

Here is a video of it not showing up at all when presentation: "transparentModal" is NOT commented out:

https://github.com/user-attachments/assets/f38376f4-a14c-4796-98c9-63eac6808efa

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked Modal_Repro, following app/navigators/AppNavigator.tsx and app/screens/ConfirmationModal.tsx; run yarn install and npx expo run:ios, then reproduce under the new architecture. Compare behavior with presentation: "transparentModal" enabled and commented out; done means the React Native modal appears above the screen while that option remains enabled.

Written by the indexing model from the issue text.

Assessment

Tech stack
ios, react-native, typescript
Domain
mobile-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
48/100

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