CommunityToolkit
[SettingsExpander] Unhandled "Unspecified error" exception
Describe the bug
When using a SettingsExpander that is bound to an ObservableCollection in a page that is not cached (NavigationCacheMode="Disabled") and this page is repeatedly opened (and old instances of the page have been garbage collected), the app crashes once an item of that ObservableCollection is removed.
Steps to reproduce
Download and run this test project : Test.zip
Expected behavior
No crash.
When adding NavigationCacheMode="Required" to Page2, the crash is not happening
Code Platform
- [x] WinAppSDK / WinUI 3
Windows Build Number
- [x] Windows 11 21H2 (Build 22000)
App minimum and target SDK version
- [x] Windows 10, version 1809 (Build 17763)
Visual Studio Version
2022
Help us help you
No, I'm unable to contribute a solution.
The ItemsRepeater inside the SettingsExpander is causing this issue, so you can see the same exception with a plain ItemsRepeater.
I found this issue (microsoft/microsoft-ui-xaml#7639) but it's closed. Leaving a comment there might help reopening it.
You can avoid this exception by setting ItemsSource to null when the SettingsControl is unloaded.
