"Priest (Forums / 3.3.5 Talent Calculator / Cataclysm Talent Calculator / Build 12479 Skills/Talents)
Lightwell
In the current beta build (or possibly the next one), clicking Lightwell no longer switches your target to it. That was one of the changes we've been waiting for to reevaluate the talent. (Enemies can still target it normally.)"
It's a start...