What do you mean by 'was never anything else'? Is this some misunderstanding?
Well, better see for yourself. I should've post it from the start, but it's only now I have realized there's a portable version on my drive. I have no idea what's going on, cause winapp2 are of the same version, 1.0.121126, as well as CCleaner itself, 3.25.1872
Portable vs Installed