I retested this here with the latest version of TAdvStringGrid with a default grid on the form and the code:
procedure TForm1.FormCreate(Sender: TObject);
begin
advstringgrid1.HintShowCells := true;
advstringgrid1.ShowHint := true;
advstringgrid1.LinearFill(false);
end;
and I cannot see such issue.
What's different in your app?
What's different in your app?