Yes. The JFXtras 2 version was
implemented in such a way that Gerrit decided he did not want to
continue to support it anymore. And he decided not to rewrite it.
JFXtras-Labs is an volatile environment, where people can put in
code and see where it leads; API's may change, or code may be
abandoned all together. Using labs is "at your own risk". Only
things that move to the official JFXtras artifacts (like
jfxtras-controls) are more formally supported.
PS: The same holds for Gerrit's Enzo library; stuff that is in
there is for his demo's, using it is at your own risk.