Attributes not displaying correctly in HTML5 viewer

We are getting an intermittent but nagging problem of attributes showing up as N/A when viewing more data in the HTML 5 Viewer (v. 2.2). It varies from PC to PC and never seems to happen with the Silverlight Viewer. I've refreshed the site, recreated the service and reindexed the feature class, but am still getting N/A's for a few features on our site. Anyone else ever see this behavior? Any suggestions on other things to try?

 

GCE 4.1.3

 

HTML5 Viewer 2.2_img_ alt="Null Attribute Values screenshot" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=90660000000Xa75&feoid=Body&refid=0EM60000000XqP9"_/_img_