Opera or KDE 4.3 bug ?

I have Opera browser on my machine.

My configuration is that when I start a session restore the previous session. (All windows open in the previous session will be open and in it’s desktop) ALL… except Opera.

Opera… or opens on a different desktop that was closed or directly doesn’t opens.

I just want to know why happens? Opera bug? kde 4.3 bug? suse 11.1 bug?

I don’t know…

Any feedback will be great