I just stumbled over an oddity in TJvDbGrid (which probably also applies to the standard Delphi TDbGrid):

I just stumbled over an oddity in TJvDbGrid (which probably also applies to the standard Delphi TDbGrid):

Including dgTab in the grid’s Options resulted in TAB moving the cursor to the next row rather than to the next column as expected. ...
http://blog.dummzeuch.de/2014/06/03/when-tab-jumps-to-the-next-row/