ErrorBoundary support for multiple exceptions

Am I using this incorrectly? I implemented as per Documentation in MainLayout.razor with the slight change that in my <ErrorContent> section I added a button that triggers errorBoundary?.Recover();.

My test involved throwing a generic exception with a message from a child component in protected override void OnInitialized(). The result was that instead of displaying the content of @Body or the ErrorContent, there was nothing. Upon opening the browser inspector I had an empty <main></main>.

I also tried creating a custom class that implemented ErrorBoundary, but this did not help either.

_Originally posted by @thirstyape in https://github.com/dotnet/aspnetcore/issues/30874#issuecomment-989263259_

[eduard-tapkey]

Are there any updates on this topic? One year later it seems multiple exceptions at once are not supported by ErrorBoundary. The ErrorContent won’t render.

[TanayParikh]

Thanks @thirstyape, let’s keep this issue open to track potentially adding support for multiple exceptions in the future.