The Class View and the Object Browser are very similar, even down to the sort by options. I had to put screen shots of their context menus side by side to figure out the differences.

The Show Project References is the only option found on the Class View that isn’t available on the Object Browser.

Show Project References option

When checked, you see the references folder:

Project references showing in the Class View

When unchecked, the references folder is hidden:

Project References hidden in Class view

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