PunRPC shortcut lists not being updated automatically.

Hi everyone,

i worked with a new project and tried PUN 2 with Unity 2019.4.23.
And after added a new method with PunRPC attribute, the shortcut list has not been updated automatically. Only after i manually clicked "Refresh RPCs" then the list would be updated.

Is there any configuration i need to make to let the it does auto refresh?

Thanks.