When the autofitcolumn method is used together with multi-headers and hidden columns, some of the columns are either not visible at all or shrunken.

The problem can be observed in the following Dojo:

https://dojo.telerik.com/EJezUyeg 

The CompanyName column should be visible, however it is not. If the example is ran in fullscreen, the column will be visible, however it will shrink if the Browser window gets smaller.