Running Mantis build 20 on RedHat Linux 6.1, remote displayed to a sparc
running solaris 2.7 (gradgrind.sfbay) under CDE/dtwm.

I'm using the JTable demo of the swingset.

I start off running in the Java LAF. I press ctrl+space to bring up the
popup menu. I change to GTK LAF. The LAF changes, but when I choose the
LAF menu at the top, it still has a check next to Java LAF. The same thing
seems to be true regardless of which LAFs I switch between.