Window list applet size does not maximize

Binary package hint: gnome-panel

Gutsy Tribe-2 + current updates:

Please describe the problem:
Window list applet size does not maximize, even if there is free room on the
panel which could be used for maximizing window list (see attached screenshot).

Steps to reproduce:
1. Add window list applet to your panel
2. Add for example drivemount applet right beside it
3. Add system notification area right beside drivemount applet
4. Open about 10 different (!) applications so that you have many shown in
window list applet
5. Open for example banshee and rhythmbox that there are two more icons in
notification area and drivemount applet is automatically moved a bit to the
left
6. Close banshee and rhythmbox so that notification area applet is resized a
bit to the right

Actual results:
Window list applet does not maximize automatically so that drivemount applet is
NOT moved a bit to the right. That means there will remain empty unused space
which should be used by window list applet. This happens whether drivemount
applet is located left from notification area or the other way round.

Expected results:
Window list applet should ALWAYS maximize its size automatically. That means it
should move not locked applets beside so that window list applet can maximize
its size! Ohterwise there will be unused space on the panel!

Does this happen every time?
Yes