Hello there. It took me a while to discover that Tomahawk's t:saveState component does not work with Trinidad unless org.apache.myfaces.trinidad.CACHE_VIEW_ROOT is set to false.
I understand that in architectural terms, both things are mutually exclusive, but I'd recommend presenting a huge warning in the logs when a page contains a t:saveState and CACHE_VIEW_ROOT is not set to false. This way users will have an idea what is happening. Thank you, Francisco Passos