If u look closely, the apron is only a piece of untreated pine wood just for testing i guess.
Geeeeeez - you guys have better eyes than me ........and I just got glasses last week !!
I had noticed it during JJP update, but thought nothing of it
but there is a little speculation brewing on the WoZ forum
EDIT
something has to change about the standard apron anyway
there is the 'State Fair' bumper and targets in the lower left of the playfield, a high apron will make this hard to see
