Web Appbuilder will not display all editable feature templates in the side panel (see images below). Currently using the WAB beta 3. I checked my config_Edit.json and all the selected features are in there. This issue occurs in Chrome and Firefox. I also cleared my browser cache, but that did not solve the issue. I even fiddled with that panels height in Widget.html, but to no avail. Maybe I should report this as a bug.
Ben,
I believe that it is a bug and you should report it ASAP so that they can address it before final release.