Expand package, expand Spec, expand Body, click on procedure name in Spec (rt-hand side display corresponding code), click on procedure name in Body - rt-hand side does not display Body code.
I also have an outstanding issue where double-clicking on errors under the error tab do not go to correct line in spec or body without first appropriately choosing Spec or Body node on left-hand side. Clicking on left-hand side Spec node, then double-clicking on error line for Body will go to a line in Spec (not very helpful).