The following are how I repeatedly see the problem:
- xmms applet installed on gnome toolbar
- start xmms
- set as "sticky" and iconise
This problem continues after shutting down xmms / removing xmms applet.
Starting xmms any way (command line, etc) still causes it to not be visible
(except in the desktop pager) when it gets de-iconised.
Temporary fixing by removing .xmms files (not sure which one[s] in
particular need to be deleted).
(I noticed this on RH6.1, but haven't raised it as a bug)
I can't reproduce this here; I start the xmms applet, then
start xmms, and I can iconise and de-iconise it; and it
returns to its previous location.