Using the drop down to load spells, right click > heals > quick heals: Anything in the Aurora line is classified as a 3 second cast time base. The other spells in this category are lights (0.5s cast), bursts (0.25s cast) and culpability line (0.25s cast). The Aurora line should probably be a faster cast, since our Wave line is a base cast of 3 seconds and is in the heals > heals tab.
It is either miscategorized as a quick heal and the 3s cast time is intentional (unlikely as it has a significantly higher mana cost than Wave) or this is a bug.
The quick heal component of it is the recast time, it's ready to be cast again as soon as the global refresh is up. So, more than likely not a bug.
