Is the appropriate version of gtk2 installed?
JavaFX 2.2 sys requirements: http://docs.oracle.com/javafx/2/system_requirements_2-2/jfxpub-system_requirements_2-2.htm lists:
Try also a jdk8 snapshot release to see if your issue has been fixed in a later build:
We also have this problem with Ubuntu 13.04 (contains libgtk2 2.24.17). I cannot reproduce the issue using JDK 8 Build 104, but it's not an option to update the JRE for our project at the moment. How can we get this fix backported to JDK 7?