Top-level menus no longer accessible via hot keys

RubyMine 7.1.2. I think. Whoever designed the Help > About dialog box should reconsider their color choice, because (at least on my machine) the light-black letters on a dark-red background are virtually unreadable.

Anyway, what happened to the hot-keys for the top-level menus? e.g. Alt-f for File, Alt-e for Edit, etc. Now you have to use the mouse in order to see/access the menu choices under the top level menus.

-- Larry

P.S. Using Linux 15.04