#537 Startup only in system tray option ignored

In Preferences, General, I checked the "At startup only
show iPodder in the system tray" option.
Each time iPodder starts, it opens the full main window
for quite some time before finally hiding in the system
tray. Worse, while the main windows is displayed, it
can{t be closed or minimized.
In other words, it ignores the preferences option and
is highly annoying.