ADDITIONAL SYSTEM INFORMATION :
$ uname -a
Darwin unit-929 18.0.0 Darwin Kernel Version 18.0.0: Wed Aug 22 20:13:40 PDT 2018; root:xnu-4903.201.2~1/RELEASE_X86_64 x86_64

$ java -version
java version "10.0.2" 2018-07-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)


A DESCRIPTION OF THE PROBLEM :
The test javax/swing/text/StyledEditorKit/4506788/bug4506788.java fails with the message Applet thread threw exception: sun.awt.SunToolkit$InfiniteLoop on Mac OSX Mojave
Please note similar issue https://bugs.openjdk.java.net/browse/JDK-7033533 was fixed in 9, but it was actual for Linux.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
$ jtreg -ignore:quiet -v -a -xml -testjdk:"/Library/Java/JavaVirtualMachines/jdk-10.0.2.jdk/Contents/Home" test/javax/swing/text/StyledEditorKit/4506788/bug4506788.java

ACTUAL -
#section:applet
----------messages:(3/122)----------
command: applet bug4506788.html
reason: User specified action: run applet bug4506788.html
elapsed time (seconds): 112.02
----------System.out:(0/0)----------
----------System.err:(8/488)----------
sun.awt.SunToolkit$InfiniteLoop
at java.desktop/sun.awt.SunToolkit.realSync(SunToolkit.java:1493)
at java.desktop/sun.awt.SunToolkit.realSync(SunToolkit.java:1402)
at java.desktop/java.awt.Robot.waitForIdle(Robot.java:692)
at bug4506788.start(bug4506788.java:66)
at com.sun.javatest.regtest.agent.AppletWrapper$AppletRunnable.run(AppletWrapper.java:157)
at java.base/java.lang.Thread.run(Thread.java:844)
STATUS:Failed.Applet thread threw exception: sun.awt.SunToolkit$InfiniteLoop

---------- BEGIN SOURCE ----------
http://hg.openjdk.java.net/jdk10/jdk10/jdk/file/777356696811/test/javax/swing/text/StyledEditorKit/4506788
---------- END SOURCE ----------

FREQUENCY : always