Happens with every manufacturer that uses stained wood cabinets. The only way to avoid it is laminates like Prevost conversions or solid woods like the older Oregon coaches and Foretravels.
If you had real walnut, maple, cherry etc, throughout you would spend a lot more $$$. Every manuf, and owner chooses a price point and the interior finish is a huge factor.
06 Dynasty Countess III ISL//3060
07 Hummer H3