Setting/updating the player's professions would, ideally, require a function call.

diff --git a/core.lua b/core.lua
index 8f38901..a9d484c 100644
--- a/core.lua
+++ b/core.lua
@@ -1024,6 +1024,7 @@ do
 			return
 		end
 		local player = private.Player
+		player:SetProfessions()

 		-- Set the current profession level, and update the cached data.
 		private.current_profession_scanlevel = prof_level