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Description of problem:
Changing setting in TCK configuration window 2 times causes gnome to spawn lots of new items in taskbar. Pressing Alt+Tab causes immediate crash of all windows and sometimes full X restart.

Version-Release number of selected component (if applicable):
java-1.7.0-openjdk-1.7.0.85-2.6.1.3.el6_7

How reproducible:
Always.

Steps to Reproduce:
1. Open the TCK UI window.
2. Open the configuration window, change the concurrency value, press done.
3. Open again the configuration window, change the concurrency value again, press done.

Actual results:
Multiple windows are spawned in taskbar, pressing Alt+Tab causes crash, waiting causes crash little later.

Expected results:
Everything should work as with icedtea 2.5.5.

Additional info:

Upstream oracle repo does not have the issue.
Reported to icedtea upstream: http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=2568

Patch attached in upstream, duplicating here.

Created attachment 1057682 [details]
Duplicate of the fix attached to icedtea bugzilla.

This only occurs on i586 RHEL 6, so there's scope for getting that version fixed earlier than the next IcedTea update.

Verified, issue no longer reproducible with version 1.7.0.95-2.6.4.0.el6_7

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0752.html