Label Frame Jumps in IntentUI Extension When Displayed

Hi,


I've got a SiriKit UI extension for a shortcut and it's working fine except for a layout issue.


The UI consists of a UIImageView and a UILabel, both in a UIStackView which is pinned on all sides to the parent's safe area insets.


When the UI first displays, the label runs off the right side of the view and then a second later, jumps back. No issues with the image view or the leading side of the label.


The desired size that I'm sending back in the completion handler doesn't change and unfortunately the UI debugger doesn't appear to work with SiriKit extensions.


Anyone seen this? Any ideas on how to fix it? It looks bad. Thanks.