JDK has a fonts directory which historically has been jre/lib.
Whilst this is (so far) still the case it is not guaranteed in
a modular image. So whereas JavaFX currently digs in to look for
the fonts based on that assumption, instead it needs to ask some API
We need to provide that on the JDK side and the FX side is
https://bugs.openjdk.java.net/browse/JDK-8088325