Nativescript: GridLayout allocate wrong height after open external app on iOS

[tr1et]

Environment

• CLI: 6.1.2
• Cross-platform modules: 6.1.2
• Android Runtime: 6.1.2
• iOS Runtime: 6.1.0
• Plugins:
  
  
  
  • nativescript-permissions: 1.3.8
  
  
  • nativescript-contacts: 1.6.2
  
  
  • nativescript-ui-listview: 7.1.0
  
  
• NativeScript-Angular: 8.2.2
• Angular: 8.2.11

Describe the bug

On iOS, after open a third party app from the app (contacts, camera, ...), the GridLayout at the root (in `app.component.html) letting 2 children overlap each other.

To Reproduce

On iOS, App has a nav bar at the bottom.

<!-- app.component.html -->
<GridLayout class="page" rows="*, auto">
  <StackLayout row="0">
    <page-router-outlet></page-router-outlet>
  </StackLayout>
  <StackLayout row="1">
    <navbar></navbar>
  </StackLayout>
</GridLayout>

In a page with a full page list:

• Open an external app from the app. i.e. contacts,...
• Back to the list
• Scroll the list to the bottom.

=> The last item is partly overlapped by the nav bar.

Expected behavior

• The last item is fully above the navbar.

Sample project
https://github.com/tr1et/nativescript-bug-break-layout

Additional context

• tns-doctor result:

✔ Your ANDROID_HOME environment variable is set and points to correct directory.
✔ Your adb from the Android SDK is correctly installed.
✔ The Android SDK is installed.
✔ A compatible Android SDK for compilation is found.
✔ Javac is installed and is configured properly.
✔ The Java Development Kit (JDK) is installed and is configured properly.
✔ Xcode is installed and is configured properly.
✔ xcodeproj is installed and is configured properly.
✔ CocoaPods are installed.
✔ CocoaPods update is not required.
✔ CocoaPods are configured properly.
✔ Your current CocoaPods version is newer than 1.0.0.
✔ Python installed and configured correctly.
✔ The Python 'six' package is found.
✔ Xcode version 10.3.0 satisfies minimum required version 10.
✔ Getting NativeScript components versions information...
✔ Component nativescript has 6.1.2 version and is up to date.
✔ Component tns-core-modules has 6.1.2 version and is up to date.
✔ Component tns-android has 6.1.2 version and is up to date.
⚠ Update available for component tns-ios. Your current version is 6.1.0 and the latest available version is 6.1.1.

• I've had this issue since Nativescript 5. Didn't try Nativescript 4.
• Tested and reproduced this bug on simulator, iPhone 6, X, XS.

[tsonevn]

Hi @tr1et,
I was able to recreate the problem within a non-Angular project on iOS 12 simulator. I will mark this as a bug and we will investigate it further. I am also attaching my test project as a reference.
Archive.zip