Lightning Chatter Feed Issues

Hi Andrew. If you’re seeing the Classic Chatter feed, that is probably because the Skuid page is inside a Visualforce page, or iframe of some kind. Skuid does make use of the Lightning Chatter component (as of 11.1). But Skuid will only try to load the Lightning Chatter feed if it knows it’s operating in the Lightning environment natively (meaning a Skuid Page Lightning Component, or a custom Lightning component with Skuid page inside).
Read more here.