jQuery Grid Plugin - jqGrid

So I've been using jqGrid for a bit now, and noticed something that seems "left behind" by jqGrid, and up until now, I was not sure what it was.  I open a jQuery dialog with a jqGrid in it, and after I close and remove the dialog, there's something still left in the DOM.  It had the id of 'alertmod' and today I found out what it was.  Apparently, there's the "Warning" dialog with the body that says, "Select a row."  Somehow, it seems that this dialog's DIV is not removed when the jqGrid is removed.  Could this be a bug in jqGrid or do you think it's something that I'm not freeing up?  I could forcibly remove it if necessary, but I'd rather see if there's an issue about this and then do it the "right' way (even if the "right" way turns out to be that I remove it from the DOM myself by its ID).

Part of me is wondering, after looking through the jqGrid code, if this isn't something that is being manifested by me using a TreeGrid control that has a pager.  Since the pager itself doesn't work (or display) in a TreeGrid, maybe this artifact is somehow being left behind.  I do put buttons in the pager DIV for performing actions, so I require the bar, but the pager might be what is causing the issue.

Thanks.