Created attachment 264902 [details]
accessible-event listener

Steps to reproduce:
1. Launch the attached accessible-event listener in a terminal
2. Launch gtk-demo's Application Class/Application Main Window demo
3. Arrow amongst the menu items

Expected results: The full keybindings and mnemonics would be available via the action interface.

Actual results: For gtk3-demo, a number of menu items have missing items as shown below.

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Gtk+ 3 results
==============

[menu | Color] click c;<Alt>p:c;
[radio menu item | Red] click ;<Alt>p:c;
[radio menu item | Green] click ;<Alt>p:c;
[radio menu item | Blue] click ;<Alt>p:c;

[menu | Shape] click s;<Alt>p:s;
[radio menu item | Square] click ;<Alt>p:s;
[radio menu item | Rectangle] click ;<Alt>p:s;
[radio menu item | Oval] click ;<Alt>p:s;

[check menu item | About] click ;<Alt>h;

==============
Gtk+ 2 results
==============

[menu | Color] click c;<Alt>p:c;
[check menu item | Red] click r;<Alt>p:c:r;<Primary>r
[check menu item | Green] click g;<Alt>p:c:g;<Primary>g
[check menu item | Blue] click b;<Alt>p:c:b;<Primary>b

[menu | Shape] click s;<Alt>p:s;
[check menu item | Square] click s;<Alt>p:s:s;<Primary>s
[check menu item | Rectangle] click r;<Alt>p:s:r;<Primary>r
[check menu item | Oval] click o;<Alt>p:s:o;<Primary>o

[menu item | About] click a;<Alt>h:a;<Primary>a