This combination do not work as supposed to.
Final grid is not 100% width, and this new size differ from IE to FF
tested on latest 2.1 pro
Are you using () columns’s width with enableAutoWidht(true)? In this case autowidth is ignored and () column takes all availibe width from the grid’s container width.
AutoWidth is disabled, You can reproduce this problem by adding splitAt to:
Sample: dhtmlxGrid Autowidth for column(s)
example file
This is expected behaviour. If you are using splitAt() method 2 separete grids are created. If one of them has column with (*) width, it cout ramain width of the separate grid, not from the whole grid.