Using AUR mysql-workbench, I dont have the result grid. If I go to the "form editor", I see the results can be edited. It means then that tha data are present but the grid is not showed. Have you the same problem? Just for the record, I buit with yaourt but also tried with manual makepkg.
Thanks for your help. Note: I'm currently installing mysql-workbench-gpl and the result grid doesnt show either...