When deleting a property within a workbench, it reports an error that the node with that id cannot be found. However, after closing and reopening the app, the parent content node of that property has been deleted, along with all contents.

This has caused quite few instances where work has been lost, or has taken quite a while to reinstate the lost contents.

To recreate this problem, all that is needed is to select a property and select delete.

I have attached a screenshot of the error box.