display of binary packages with different versions inconsistent

[juhp]

It is possible to build binary rpm packages from a single spec file which have different version.
In this case the versions of the subpackages are shown incorrectly by fedora-packages.

In some cases it displays the same version for all the packages

In other cases it does not list some binary subpackage pages due to the differing version number?

Some older examples: ghc and haskell-platform