Mold/Mildew on top of auto dose detergent drawer

[olejokle]

Hi. I have a Samsung washing machine WW5300 / WW95T534CAE (Norway/Nordic) with automatic dosage. Is it normal that water forms on top of the drawer, so that over time it develops mold/mildew? It is generally dry in the room where the machine is, but the drawer stays closed for many days between refilling, naturally. Also we have not spilled detergent on top of the drawer. See picture after and before cleaning. Unable to remove stains.

[Glenntech]

All the washing machines I've owned over the years, I regularly take out the draw to clean it.
It's naturally going to be damp in there, with the draw shut. It's not going to dry out.
One thing I do after washing is leave the draw open for a while and the door.
But still take out the draw to clean every so often.