It seems like changes made through the various forms tabs, such as "Title and Definitions", "Terms" are correctly reflected in the Project Feed view, but changing "non-ontological" information in the "Linearization" or "Postcoordination" tabs are not.
This might be a difficult issue to fix, as it might require changing what information the "Project Feed" view is able to process, and extend it beyond the capabilities offered for WebProtégé.