ListView inside TabView does not always update on iOS

[daveware-nv]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: 5.3.3
• Cross-platform modules: 5.3.2
• Android Runtime: 5.3.1
• iOS Runtime: 5.3.1
• NativeScript-Angular: 7.2.4
• Angular: 7.2.15

Describe the bug
Intermittently a ListView will not update when the backing array is changed/updated.

• Only appears to occur on iOS
• Seems to only happen when in a TabView with multiple tabs
• Occurs intermittently.
• Occurs infrequently in my emulator tests, but occurs quite often on my device test (iPhone 6 ios 12.2).

To Reproduce
I've setup the list to load after a 1s delay

1. tns run ios
2. if list appears (after 1s) tap any item
3. tap the button labelled "back"
4. repeat from 2 until the list doesn't display

Expected behavior
List should always display

Sample project
https://github.com/daveware-nv/test-ns-ios-listview

[tsonevn]

Hi @daveware-nv,
Thank you for the provided sample project, I was able to recreate the problem and will mark it as a bug. For now, I would suggest keeping track of the issue for further info.

[daveware-nv]

It appears this is more serious than I thought. It is not just list-view's that are broken in the tab-views, some other components also seem to stop working at the same time.

I've added a branch linkBroken that demonstrates this, it adds a button labelled "go" that always links to item 1. It also stops working at the same time as the list fails to update.