I have a rule created for new players, that executes two CloudScript functions and grants one item to the player. The item never gets granted, but there are two kinds of flavors of this problem when monitoring the playstream in the portal:
1) Nothing except "entity created" appears in the playstream log
2) Sometimes "Successfully granted 1 740 from catalog bWFpbg%3d%3d to player." appears.
Note in the second case the weird catalog name (it's called "main" in reality). Also when looking at the event details, it says "Item could not be found on given catalog."
I am mostly testing using the "new player" button in the portal.