Spring's freemarker support comes with a set of macros for form binding, these rely on an attribute begin present in the freemarker model 'springMacroRequestContext'. This needs to be set by the Blossom freemarker view renderer.

Also, in order to use the form binding tag library in freemarker views it needs to see the freemarker model as request attributes. The Blossom freemarker renderer needs to expose them that way.