Bug: https://bugs.openjdk.java.net/browse/JDK-8167103 Webrev: http://cr.openjdk.java.net/~prr/8167103/
This bug is a deadlock in MacOS platform font code when JavaFX and Java2D are both calling platform font APIs. This can happen in the context of Swing inter-op for FX. It was previously seen when embedding Swing in FX (SwingNode) in bug https://bugs.openjdk.java.net/browse/JDK-8120878 There was a workaround added for that case. Now it is seen when loading embedding FX in Swing (JFXPanel) What seems to work is switching 2D from using the deprecated ATS API to the same CoreText API used by FX. The bug was reported against FX but since the fix is in 2D I've recategorised it. -phil.