I've worked in the auto paint industry for 35 years, and it looks to me like a 2 part urethane delamination issue. Do they use 2 part urethane clears? There is a time window for recoats, if window is missed, either to soon or to late delamination can and does occur. Or the playfield itself was contaminated with silicone or wax during clear and art work process. 2 part urethane also does not wick into bare unfinished wood as well either. Just my 2 cents.