FF45.0.2 Win7 In nested contextMenu i.e. where there is a parent and child (submenu), setting the contexts on the parent menu should apply to its child-menus (unless specifically stated otherwise) Via trial & error, the only way I could get the menus to show/hide based on contexts was to set the contexts for all of them. - Setting the contexts on parent menu only has no effect. - Setting the contexts on child-menus shows/hides the child-menu (although it shows an unsightly small square) but not the parent. Here is an example: var contexts = ['selection', 'link']; browser.contextMenus.create({'title': 'Title', 'id': 'parent', 'contexts': contexts}); browser.contextMenus.create({'title': 'Action 1', 'parentId': 'parent', 'id': 'child1', 'contexts': contexts, 'onclick': process}); browser.contextMenus.create({'title': 'Action 2', 'parentId': 'parent', 'id': 'child2', 'contexts': contexts, 'onclick': process});

The limitation seems same to Google Chrome's spec. http://stackoverflow.com/questions/11468798/create-two-child-menus-for-every-parent-menu-in-chrome-extension http://stackoverflow.com/questions/14818714/adding-children-to-context-menu-links/18198476#18198476 I also think that child context menu items should inherit default `contexts` from the parent item, isntead of static defaults `["page"]`. But there is a problem: the change will break compatibility with Google Chrome.

need to discuss on list if there is enough reason to break from following compatibility with Chrome in this area.

Doing more with context menus was a frequent request in the developer survey.

Firefox 46: New Bug The parent menu is not hidden by contexts anymore (same code as above).

Firefox 47: Above bug is still present (parent menu does not hide according to context)

Is there a way we can do this that would avoid breaking compat. with Chrome? Otherwise I'd suggest won't fixing.

The other bug has a patch.