If I open a saved project with an existing map and layout and add a new layer to the map, the new layer does not appear in the legend. It's not that it's not turned on, it's not in the legend list at all. I have "New layer" checked under "Synchronize with map" in the Legend properties. I was excited to find KB article, Problem: Layer visibility is not honored in the legend in an ArcGIS Pro layout, but that's just operator error (not checking the legend item in layout view to make it visible). In my case, the legend item for the layer does not appear at all in the legend item list. The only way to work around it is to insert a new legend. Anyone else?