Aye, black boxes are fixed in Beta 2, but icons sometimes flicker strangely.
Oh, has anyone mentioned the odd behavior of the P-51 prop blades? For me, the propellor is invisible until I start the engine and the prop gets up to full rotation, after which I can see the circle made by the motion of the yellow tipped blades. If I turn the engine off, I can see the propellor feather and slow, but then it appears to start rotating again even though the engine is still off. Very odd.
Also: The C-47 propellors don't counter-rotate.