Component Details - Using IntelliJ IDEA 2017.1 CE and jdk-9-ea+154
main() -
Set se
I had the same issue on Manjaro Linux, while it was working fine on windows. Looking at the differences it became clear that the javafx 11 package installs into /lib/jvm/java-11-openjdk/lib, which I then set as PATH_TO_FX. This seems to be the issue, because jrt-fs.jar is in the same folder.
I moved all files from fx to a separate folder and then set that as PATH_TO_FX. Now it works fine.