The Linux version of JavaFX must be older as inside the Windows version. It has some bugs that don't appear anymore on the Windows version, but makes the Linux version crash.

For example: I can't add about 1000 Buttons to a FlowPane (usually i don't do that) under Linux u25 because i will get a StackOverflowException (why ever). If i do the same under Windows u25 it works without a problem. But the same bug happens on older Windows version like u11.

So i have to guess that some parts must be different (older) as in the current Windows build. This is bad, because programs that run under Windows wont run under same version in Linux.

PS: System.getProperties("javafx.runtime.version") is null under Windows.