CGD v 2.9.0.212
I have a number of dialogs in my app. All are modal = true and UseMaxZ = true
If I open only open and close one dialog everything works as perfectly: edits work, drop downs work, date drop downs work.
Open and close other dialogs in any order and eventually (after 4 to 5 open and close of different dialogs) edits and date drop downs stop working work but drop downs still work.
In all dialogs I changed the modal = false and under the same operation the date drop downs display under the dialog.
In all dialogs I changed the modal = true and the UseMaxZ to false and under the same operation the edits, drop downs and dates work correctly.