Adding Emerald Blossom as a custom spell of [@mouseover] Emerald Blossom allows me to cast by selecting the unit frame, the same as a simple binding using the standard bind drop-down menu.

I would like to be able to also point at players in the game world window, since it's sometimes easier to place it at the center of a group of playesr that way. But that isn't working at the moment, even with @mouseover. Only when the Cell unitframe is targeted is the spell cast, and it's centered on that player.

Tested as Preservation Evoker. 11.0.2. Cell r240.

Sounds like this is similar to the issue Monk's Life Cocoon is having as reported in issue #229.