[UWP] AccessViolationException when adding items with the appearance of the item.

[paymicro]

Description

When added items in ItemSource in OnItemAppearing throws AccessViolationException

Steps to Reproduce

1. Create ListView with ItemsSource
2. Add event ItemAppearing
3. In event body add new item to ItemsSource

Expected Behavior

Items are added without errors.

Actual Behavior

Throw AccessViolationException

Basic Information

• Version with issue: on master branch

Screenshots

https://prnt.sc/jrkdsi

Reproduction Link

https://github.com/paymicro/Xamarin.Forms/commit/eed5ab74e682a8f9936daa0e78447cefad64a668

Relation bug: #2832

[nbevans]

This is still an issue. AccessViolationException's being thrown, intermittently, in certain nuanced scenarios with ListView on UWP.

In my experience the chances of a AVE go up massively when the app is having some performance lagginess (for unrelated reasons) on the UI thread.

[samhouts]

This issue doesn't seem to have had any activity in a long time. We're working on prioritizing issues and resolving them as quickly as we can. To help us get through the list, we would appreciate an update from you to let us know if this is still affecting you on the latest version of Xamarin.Forms, since it's possible that we may have resolved this as part of another related or duplicate issue. If we don't see any new activity on this issue in the next 30 days, we'll evaluate whether this issue should be closed. Thank you!

[samhouts]

Since we haven't heard from you in more than 30 days, we hope this issue is no longer affecting you. If it is, please reopen this issue and provide the requested information so that we can look into it further. Thank you!