QDBusInterface freezes on construction

Easiest way to reproduce is to open qdbusviewer and point it to an interface of a hanging dbus activatable program

Steps to reproduce:

1. Open a Terminal
2. Run gnome-maps (a dbus activatable program)
3. Hit ctrl+z to "freeze" the application manually
4. point qdbusviewer to the interface org.gnome.gnome-maps
5. qdubsviewer hangs

This is not qdbusviewer specific 

QDBusInterface app(f.completeBaseName(), path, QLatin1String("org.freedesktop.Application"));

will hang the program constructing the interface.

QDBusInterface freezes if interface corresponds to dbus activated service (that's hanging - I mean the service)