Using the VoiceOver Actions Menu to Delete Conversations from the Messages App is Broken
When using the VoiceOver Actions Menu to delete a conversation from the Messages app, it is not completely removed from the list of message threads. In it's place will be left a "broken" item in the list which VoiceOver announces as "null." Whilst in this state, the message list will not update to display or give access to any new message threads; to resolve this, you will need to close the Messages app via the App Switcher.
Bug First Encountered
Device(s) bug has been encountered on
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To avoid this problem, we recommend that you use the "Edit" button to select and delete conversations and not the Actions menu.