Page Properties popup only displays for Administrators

We are testing author groups in our staging environment.  When creating a page, the "Page Properties" option in SideKick is active but the popup does not display.  I've tried setting permissions under /libs/cq/ur/widgets/source/widgets/wcm/SideKick.js but no luck.  I've created several groups and used the out of the box groups, but only admins have access to the page properties popup.