[xwiki-users] "Create" panel always says the page exists, no matter the name

When trying to create a new page using the New Page/"Create" panel, it always displays a message that the the page already exists. Other means of creating a page work fine, like using the "Create Page" menu item of the space or typing the new page name in the URL. I have an XEM 2.3.28624 installation with two XE instances set up using Path-based resolution. This error is occurring in both XE instances. Steps Taken 1. visit the wiki http://server1/xwiki/wiki/mywiki/ 2. Type in any value into the Name field on the "Create" panel 3. click the "Create" button The page with "This document already exists" is shown.