Crucible "Review Inbox" Gadget Does Not Work With Trusted Applications

Steps to reproduce:

1. Set up a Trusted Application Link between JIRA 5.1.8 (or higher) and FishEye/Crucible 3.2.3.
2. Confirm that the JIRA Issue Source and Review tabs are working.
3. Add the following Crucible Inbox Gadget into the JIRA Dashboard:

   http://HOSTNAME:8060/rest/gadgets/1.0/g/com.atlassian.fecru.fecru-gadgets-plugin:overdueReviews/gadgets/todo.xml
   

4. The Crucible Inbox Gadget is unable to load with the error "Client must be authenticated to access this resource".

Workaround

Switch the application link authentication mode to OAuth