Tried out the single constellation display option. My Stellarium version 0.10.2 behaves as follows when I choose the "Select single constellation only" option in Configuration/Tools :
When I select Sirius, Canis Major constellation lights up. If I then click on Betelgeuse, both Orion and Canis Major light up. Then if I select something which is not in any constellation, like the Moon, all the constellations light up. Next, if I click on Betelgeuse again, only Orion lights up. So, if I click on one star after another in successive constellations like in the zodiac, only those constellations will light up.