WebView/WebEngine crash "A fatal error has been detected by the Java Runtime Environment"

We print our documents with WebEngine but after some successful runs the programme crash. I add a test case HtmlToPrint.java and the crash report this mail.

Perhaps you have to increase the number of runs in line 80.

The console output was

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x527fc603, pid=9808, tid=9336
#
# JRE version: Java(TM) SE Runtime Environment (8.0_77-b03) (build 1.8.0_77-b03)
# Java VM: Java HotSpot(TM) Client VM (25.77-b03 mixed mode windows-x86 )
# Problematic frame:
# C [jfxwebkit.dll+0xa9c603]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\workspace\WebViewBrowser\hs_err_pid9808.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#