I'm not sure whether this is a bug or not, but the toolbar(controls, settings, help) at the top of the Tomahawk window disappears when you restart Tomahawk. Of course you can make it appear again by clicking the wrench icon in the TomahawkToolbar and click show toolbar, but what if you disable the TomahawkToolbar? I did this and I couldn't seem to find a way to get the toolbar(controls, settings, help) or the TomahawkToolbar back. It would be great if the toolbar(controls, settings, help) didn't disappear when you restart Tomahawk.
I'm on 32 bit Windows 7 and Tomahawk 0.8.4.
Disabling the toolbar shouldn't be allowed indeed - this must be a regression either in Tomahawk or Qt. Thanks for the report!