It seems that the columns FormFieldInputPattern and FormFieldTitle were added to the table FormField somewhere between 9.8.3 and 9.8.8. However, the update script did not create them for some reason and I cannot find anything about it in the log. I find that it works if both fields are as nvarchar(255), but just to make sure I would like you to confirm that this is the correct data type for the fields.
The error appears in Apps > 'Forms for editors' and on the forms in the frontend.
Kind regards
Roald, Novicell