Hi enzymer,

I just tested the issue you mentioned, but on my side, DefaultFurnitureCatalog is called only once at application launch, and if I comment the readFurniture call for ContributedFurnitureCatalog.properties, Sweet Home 3D shows only the furniture of DefaultFurnitureCatalog.properties as expected !?!

Are you sure you didn't make any other change in the code ?
On which system and JRE did you do these tests ?