In general I agreee, but my Pi is in the basement connected by ethernet.
I just tried sudo systemctl stop connman and the Pi stoped connecticvity incl VNC.
Seems connman is the main connectivity manager on my system and in combination with deconz this problem comes up. So removing connman will leave me with a not connected system, responsible for my homeautomation.
So may be deconz should check where the issue is and try to fix, as conman is one of the recommended connection managers for raspbian.