Steps to reproduce: 1. Press Opt+Cmd+H or, in the menu bar, click "Firefox" -> "Hide Others". 2. Press Cmd+H, or, in the menu bar, click "Firefox" -> "Hide Firefox". Expected results: "Hide Firefox" and "Hide Others" were disabled, so nothing happened. Actual results: If the keyboard shortcut was used, the "Firefox" menu flashed blue, but nothing happened. If the menu item was used, an enabled menu item was clicked, but nothing happened. CC'ing mstange, since he might know who would be able to fix this.
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