Inconsistent naming?

I can execute the following:

 

  create function a.bFunction .

 

I can also execute the following:

 

  create trigger bInsert after insert on a.b for each row execute procedure
a.bFunction.

 

However, I cannot execute the following:

 

  create trigger a.bInsert after insert on a.b for each row execute
procedure a.bFunction.

 

Shouldn't I be able to qualify the trigger name with a schema??

 

(1.0.3)