My Maiden pro was built May 2018.
Playfield never had dimpling and it is super glossy.
I found one bit of rippling ( that I wouldn't have seen if I didn't look very closely ).
My only longer term worry is why some rippling turns to cracking and peeling?
Also, it seems to be happening at a faster rate on the latest games.
I decided to mylar just this spot to give the area longer term protection as the ball really whacks this post!
Only other thing I will do now is avoid games built 2018/19, until it is certain Stern/JJP have solved this issue.