When an editable column cell is clicked, and the grid is immediately scrolled, the highlighted (edit mode text) overlays the grid as it's scrolled and stays hovering above the grid. If you type it continues to allow you to edit, which is okay I guess, but it shouldn't be static on the screen. It should move with the grid when scrolled.
Column.Editing / Inserting
Is this a way to toggle edit and insert for columns?
Column.Editing doesn't seem to be respected. A cell value can be edited (although it may not save it - I didn't test that) even when it's false. In my opinion if editing is False the cell contents should be read-only.