I found two bugs of jqGrid 4.3.1:

1.  I have a dropdown box in search dialog, if I didn't change its option and began to search at the first time, the first option of the dropdown box will be set to "null".

For example, the value of the first option of "Status" field is "0″, so I expect the following query parameter:

{"groupOp":"AND","rules":[{"field":"Status","op":"eq","data":"0"}]}

However, it becomes to:

{"groupOp":"AND","rules":[{"field":"Status","op":"eq","data":null}]}

2.  I set the following options for the grid:

forceFit: true, 

autowidth: true,

When I  adjust the width of a column and navigate to the next page or change the size of the grid parent container, the width of this column will be restore to its initial value which has been defined by colModel option.

The following settings also have the same issue:

autowidth: true,
shrinkToFit: false,

However, jqGrid 3.8.2 doesn't have these issues above.  Any idea for this?  Thanks.