Cluster housings are not air tight.
All brands.....if there is a situation of high humidity (wet carpets) and a rapid temperature change, for example, a cold damp car pulling into a heated building, you will note the windows will fog as well as the lens over the instruments.
The glass fogging is easy....leave the doors open till the temperature equalizes.
The fog on the cluster though, remains. This is because there is hardly any air movement in the housing.
Usually a longish drive with the dash lights on will generate enough heat to dry things up....there is nothing to repair.
BTW.....I get this with every car I own.....in the winter, when I pull into my sons toasty shop to wash the car. Often so bad you can barely see the needles......usually cleared on my way back home with the heater on....maybe 20 minutes.