Why does my Shadowmeld have a 3-minute cooldown?
Shadowmeld was fundamentally changed so that it can be used in combat and essentially functions as a temporary aggro wipe. If you happen to be alone and enter combat with one or more mobs, using Shadowmeld causes the mobs to lose their interest in you, leashing back to their original spawn point or path. Unfortunately, this puts a real damper on the tactic of sitting to drink and using Shadowmeld. However, the same thing can be accomplished using Cat Form, sitting to drink (now available in forms), and using Prowl (credit to Willowbear).