No, it was just an old resolved bug where you would get the behaviour you are describing if that option was selected. If you have Spotify set to automatically start with Windows though, it might be worth trying it without that option (and go for a system restart) to see if that makes any difference.
Check the shortcut properties. Is it possibly set to open minimized to the system tray? Worth a look, I guess. Behavior would indicate that it is. I have iTunes set to do that so it will not appear on the screen at startup, but still keep my podcast downloads up to date. I can't remember exactly how I did it, but I found the instructions on Google.
Not either, but i seem to have found the problem now. I am running a software called DisplayFusion, which grants me more options to controlling dual monitor, such as wallpaper, screensaver and much more. What strikes me as odd is that Spotify is the only program affected, none of the many other programs are unaffected by this software
I discovered this during the weekend where i attended a LAN party and thought that a dual mon setup would be too much of a hassle. I then opened spotify while only having one monitor and it showed on the taskbar just fine, even after reboots.
So i think i have isolated the cause, now comes the part whether or not the Spotify crew will help me solve it, which i dearly hope you will :)
Edited title so other with same problem have a better chance to find this thread.