Tested with JavaFX 2.2.21 and noticed the warning mesasge "Prism-ES2 Error : GL_VERSION (major.minor) = 1.4"? printed out by default.

*** Tested Configurations:
- x86 Ubuntu 12.04
- Firefox 19.x
- jre/javafx 7u21-b09

**** Steps to reproduce:
0) Install jre 7u21-b09 promtion
1) Configure Firefox to use the 7u21-b09 plugin
2) Use Firefox to invoke any JavaDZ sample apps

If you see the warning message "Prism-ES2 Error : GL_VERSION (major.minor) = 1.4"?
printed out on the terminal, the issue is reproducible