Two facings of the martian chair have it placed in the very corner of the tile instead of the centre, where it should be. This results in the character models only sitting on half a chair.
Also the oval shaped martian table can only be placed side by side, because if it's placed end to end the table models overlap & look rather terrible.
This bug could be remedied by making odd shaped tables turnable like chairs or simply improve their poor design.
As a last thought could the developers please make the cool martian square table available in the shop.