[V2] scrollEnabled set to false brakes all touch events

Bug

If scrollEnabled of ViewPager is set to false on iOS content of initial page inside native view pager stops getting all touch events.

Environment info

React native info output:

  React Native Environment Info:
    System:
      OS: macOS 10.15
      CPU: (12) x64 Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz
      Memory: 2.39 GB / 16.00 GB
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 10.16.3 - /usr/local/bin/node
      Yarn: 1.17.3 - /usr/local/bin/yarn
      npm: 6.9.0 - /usr/local/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 12.4, macOS 10.14, tvOS 12.4, watchOS 5.3
      Android SDK:
        API Levels: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 7, 8, 9
        Build Tools: 27.0.3, 28.0.2, 28.0.3
        System Images: android-16 | Intel x86 Atom, android-18 | Google APIs Intel x86 Atom, android-19 | Google APIs Intel x86 Atom, android-21 | Intel x86 Atom, android-22 | Google APIs Intel x86 Atom, android-23 | Google APIs Intel x86 Atom, android-24 | Google Play Intel x86 Atom, android-27 | Google APIs Intel x86 Atom, android-28 | Android TV Intel x86 Atom, android-28 | Google Play Intel x86 Atom
    IDEs:
      Android Studio: 3.5 AI-191.8026.42.35.5791312
      Xcode: 10.3/10G8 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.8.6 => 16.8.6
      react-native: 0.59.10 => 0.59.10
    npmGlobalPackages:
      react-native-cli: 2.0.1
      react-native-git-upgrade: 0.2.7
      react-native-rename: 2.4.1

Library version: 2.0.0

Steps To Reproduce

1. Use native ViewPager component on iOS
2. Set scrollEnabled to false
3. Initial page of ViewPager stop receiving touch events

Describe what you expected to happen:

1. Use native ViewPager component on iOS
2. Set scrollEnabled to false
3. Receive all touch events inside initial page while disabling scrolling of ViewPager

Reproducible sample code

let enableScroll = false

<ViewPager
  style={{ flex: 1 }}
  initialPage={0}
  scrollEnabled={enableScroll}
>
  <View style={{ flex: 1 }}>
       // This button is not receiving touch event on iOS
       <TouchableOpacity onPress={() => { enableScroll = true }}>
            <Text>Test</Text> 
       </TouchableOpacity>
  </View>
  <View style={{ flex: 1 }} />
</ViewPager>

[dratwas]

Hey, @ivan3177 thanks for reporting this issue! Could you please check it on new 2.0? @ptrocki made a fix and it is merged already 🎉

[troZee]

Hey @ivan3177 , thank you for reporting this issue. I can reproduce it in example app. I will take a look onto it.