In 6.7, when editing a Ruby file (.rb), toggling filters in the navigation pane (Fields / Class methods and Variables /
Non public members) doesn't change anything in the pane's content. It occurs both when using the buttons or the context
Seems like a dupe of issue 150413, the fix will be delivered in 6.7 patch1.
*** This issue has been marked as a duplicate of 150413 ***