The hints for all toolbutton from the top left toolbar on the column editor form are broken: Instead of explaining what the buttons are/do, they all show the same (random) column name...
Oops - my mistake. The hints are correct, just in a weird format that I didn't expect and therefore didn't properly read:
Example
Expected: Checkbox column Got: TNvxDBCheckboxcolumn6
Didn't see a delete button for posts - otherwise I would have deleted this ...
