Create an Aikau page using a POST webscript. On loading the page, you'll see a stack trace similar to this: http://pastebin.com/XegZJqAA
This is caused because there's a hardcoded "GET" when looking up the webscript.
See here for context: https://github.com/Alfresco/community-edition/blob/master/projects/surf/spring-surf/spring-surf/src/main/java/org/springframework/extensions/directives/ProcessJsonModelDirective.java#L569
Raised by Ole Hejlskov on IRC