It's not a funny way really - it's brilliant, and it does so for a very good reason
If you have fought with other 3D programs where the textures scale themselves when you move a line or do some other modifications, which is what happens with normal UV mapped faces, you ought to love the way SU does it. The textures keep the same physical size whatever you do to the model (except scale the group/component, in which case the texture is scaled with the rest of the group), unless you tell it to scale, rotate, shear etc by using the Texture tools.
This is one of the features that makes SU so great for architectural models etc.