[Orgmode] change faces via custom, not permanent

[Uwe Brauer]

Hello 

that looks strange: I changed a couple of faces via 
(customize-face "")
namely 
Org Code: (sample) *
and 
Org TODO: (sample) *

However when I add a new =this code= string I have to turn
off and on font-lock-mode, otherwise the string is not set
in the new face.
Is this a bug (org-6.34)

Uwe Brauer