Bug in fonts of OpenJDK

[theUser BL]

I have tested the OpenJDK in the OpenSUSE distribution and the Windows and Linux builds at
http://www.azulsystems.com/products/zulu
All have the same bug, which Oracle JDK
http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html
don't have.

If you start SwingSet2.jar and naviagte to a "Source Code"-tab, then the sourcecode is formatted.
But on Oracles Java, words like "import", "public", "int", etc. are bold. On OpenJDK they are not.
But the other words, which are colored, are on Oracles JDK and OpenJDK same colored.

Greatings
theuserbl