Major Description
When using the Sessions info(), error() and success() methods, and the session is temporary, the messages can be dropped silently. This happens when on stateless pages and a redirect happens in the same request during which a session message is added.
The fix for this could be to make sure the session is bound and call Session#bind() automatically when a session message is added.
Email thread:
http://wicket-users.markmail.org/thread/zd72s4gwnlp5d7ch