In configuration with * as one column size
setSizes() need to be called manualy after addRow() if not the horizontal scroll bar appears.
HOW TO REPRODUCE:
Modify samples\rows_and_columns_manipulations\addrows_grid.html
change:
mygrid.setInitWidths(“100,250”)
to:
mygrid.setInitWidths(“100,*”)
Thank you for notes. This bug will fixed at the next dhtmlxGrid version