I have created grid based on table having n fields and this is ok. Next i add 1 field ( varchar(1) ) on table and add this field on sql and save. This new field does not appear in any block, neither in the fields entry of the grid, nor in the search fields. Currently to solve I have to rebuild the grid immediately including the new field, so it works, but it is frustrating. My environment is: linux + php 7.3 + mysql + sc 9.8.5 (8)
Are you going into the SQL of your grid and adding that new field to the select? Save and go into EDIT FIELDS and make it visible in your grid.