[efreak]

Worse is when the hotkey is underlined but doesn't actually work (multiple buttons with same hotkey, and instead of switching between them it just doesn't do anything. Admittedly this is rare). Or when the list is an MRU that can be navigated with the first letter of the item names, but some letters are reserved for static functions (looking at classic shell start menu: I can't start certain programs from the MRU or pinned list without the mouse because (A)pps Sh(u)tdown (S)ettings are reserved. Numeric helps with MRU, but can't be used in multiple places for the same reason)