I don't know if it's been fixed since I noticed it, but at least some version of it is lacking the ability to enable/disable UPnP support at compile-time.
It also adds an implementation of bitcoin: URIs that is not compatible with the existing established/in-use standard.
BTW, I don't like QT... It is a ugly toolkit... GTK3 is much nicer... But, I appreciate the effort!!
Qt supports GTK2 right now, at least. I expect it will support GTK3 soon.