Sorry
It was several month back when I rearranged the city. I won them at a special questline with prizes, think it was last harvest festival if I remembered correct (they were the premium building at the age I had then), and when I shifted age next time I moved around buildings in the city and the problem disapeared. Since they functioned and it was only the picture of them that was a problem and didn´t care that much about it so I don´t remember the details.