Nav Collapsed in a side bar header?

Just curious if anyone else can verify this… adding a navigation collapsed element to a right/left header bar will just render the menu, and not the toggle or slide window.

is that feature, or a bug?

Correct, it was originally intended to be that way since most left/right navigations show the actual links right away. It does the same if you add it in the content builder. We’ve got an open feature request to make the “Toggle” optional. That way you could simply decide how you want it to behave.