Private rooms?

The private rooms of washrooms in Canada are very strange because the partitions between them are not tall enough to separate each other. Canadian people are generally tall and I am tall as a Japanese, therefore I sometimes happen to make eye contact with my neighbor when I feel awkward. Why don't they make partitions cover from bottom to top? I think Western people make much of their privacy, but as for washrooms, they are too generous. Anyway I found today a very strange scene in the private room. The neighbor who I don't know was sitting in the opposite direction, that is to say, he was sitting toward the water tank!