How to reproduce :

• Go to Pages app
• Right click outside red and green rectangles (see attached screenshot), nothing happens ( browser menu should appear). In the green : browser menu; In the red : action pop up.
• Right click on a page, action popup menu will open
• Unselect the page selected and right click under the pages list (or nearly everywhere), the menu will open but with a bunch of features seem to be available where they shouldn't (don't work). Only Add Page and Import perform.

Same behavior on M5.