Right now if you select multiple rows then right click > delete, it only deletes the row you clicked on. It should delete all rows selected.
Are you aware that you can delete multiple rows from the ‘Actions’ button?:
(works in db view and table view)
I did not know there was an actions button, so that is useful. However, I would still expect it to behave exactly like every tabling application when directly right clicking on the selection.