jqGrid dataUrl dropdown list not refreshing
I think you have to use
ajaxSelectOptions: { cache: false }
jqGrid parameter to set additional parameter cache: false for the jQuery.ajax used by jqGrid if it get the data from the server from the dataUrl.
I've noticed that cache policies vary from browser to browser (chrome seems to have the most aggressive caching policy). Does the behavior repeat in all browsers? Ctrl-F5 work?