I warped into a star system and successfully killed a Raptor Escort with no UI/Control problems. More Klingons warped in, and I began fighting them. All of a sudden, I couldn't fire my torpedoes (hotkeyed to 2). I tried to Balance my Shields (3), but couldn't, then I tried to boost my shield strength (4), and nothing. I activated all my offensive buffs (Alt + 1, 2, 3, and 4), and I activated Evasive Maneuvers (Ctrl + 3), with no problems at all. Why was my bottom action bar unresponsive? In hindsight, I should've tried clicking them with the cursor, though since I have a laptop with no mouse, I never play that way anyway.