I've got a shapefile with different information in the attribute table. When I add a new field to the table in every field there will be added a space character in front of the entry. In addition to this some of the fields get new values and the new added field will be filled with values without having set a default value.
I got a intricated solution by exporting the shapefile in ArcMap to a new shapefile.
But does anyone know the reason for this behaviour?