In a generated content app I have an add item action using OpenDetailSubappActionDefinition.

This is available in the root and is shown as available when I first open my browser subapp. If I use the action to open the detail subapp but then close it using the cancel button, the add item action is shown disabled. I cannot re-open the detail subapp without closing the entire app.

The action is also disabled after creating and saving a new item or editing and saving but I am able to select and then unselect the existing item to restore the action.