+++ This bug was initially created as a clone of Bug #16497 +++
From within R, this command X11() will grab the upper left corner of the screen and hang. It is possible to move the window. It is not possible to close it.
Downgrading the patch to 1.15.0-26.el6_6.x86_64 will allow the function to work again.
Please Note: The original bug reprt is marked as "RESOLVED NOT REPRODUCIBLE". A duplicate of the bug is marked as "RESOLVED DUPLICATE". Note that Red Hat have reproduced this issues and have submitted a fix for the bug. Please see Bug #16497 for their comments and the fix. This was raised to prevent the fix getting lost.
Please don't.... We get the message and can easily reopen the original report when new information arraives.
*** This bug has been marked as a duplicate of bug 16497 ***