I just pass my hand in front of the reflector and everything is back into shape when that happens. Its not that annoying.
While we are talking about Track IR, is it me or the new cockpit view boundaries (version 2.20) did not affect the TrackIR head position freedom of movement at all? In the P47 for example, without Track IR, you can move your head position sideways much farther than with TrackIR activated. In fact, you can only move it inside the old boundaries.
That bothers me more than having my view screwed up because I looked too far back for the infrared light sensor to register accurately.