I have a dojo with instructions (on the dojo rendered page) on how to reproduce the issue: http://dojo.telerik.com/Afaji/4
If you (1) Group a column in the grid, then (2) manually expand the width of column(s), (3) Run columns thru grid's "autoFitColumn" function....
Expected behavior: All the columns reduce/expand in size to only accommodate the data within (works fine if no column grouping)
Actual behavior: The columns do NOT reduce in size (to only accommodate the data within).