3.4 Unexpected Window Behavior

Problem 

Some of my application windows appear above all desktop environment windows and do not restore properly or appear in the GNOME window list. 

Solution 

By default, many applications which are based on MainSoft libraries ignore the window manager and attempt to manage their own windows. Rational Rose and XML Professional Publisher are known to have this problem. To tell MainSoft-based applications to behave correctly, you must set the MWWM environment variable as follows:

MWWM=allwm