I have a record with id 1. In the OnEdit event, we check if the Edited item has Id == 1 and if so we cancel the edit. Now, the UI, if the Grid is in Read mode (not in Edit) clicking on the Grid cell that has Id == 1 does not trigger the edit, thus the editor is not rendered. On the other hand, if we open a previous cell that is editable and we click enter (tab) multiple times the non-editable cell will enter Edit mode and the editor is rendered.