Ensemble8: SIGSEGV when scrolling properties in chart samples

Run Ensemble8. Start some chart sample which has properties. Go to properties tab and scroll it. Some times it will crash like:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007ffabffdc369, pid=8419, tid=140714706167552
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b109) (build 1.8.0-ea-b109)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b51 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libGL.so.1+0x2f4369] glDeleteTextures+0x9
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/sqe/hs_err_pid8419.log
Phoning home...
Using server: 10.161.186.18, port 4711
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Aborted (core dumped)