Was this ever resolved?
Experiencing something similar where I can’t edit the Name Column of item.
It even starts to break my forms that are set to edit the column.
I noticed that if I right-click on the column header in data-editor, and just hit “done” with out changing anything, I can edit the column for a few minutes.
I think when I added too many columns in a short time, I face somewhat the same behaviour, in the data view. When I go back to the main screen and then click the data view again, I can add columns normally.