There is something a little more serious seemingly going on and it seems to relate to DocumentGroup regardless of DocumentGroupLaunchScene being used or not. It seems that when you open a document it is being loaded twice; making the all views for the document editor twice and adding them to the view hierarchy, one on top of the other. When you go back to the document picker and open another document (or even the same one) another view is created and stacked on top of the existing views. This happens in iPadOS 18.4 but not 18.3.1