rpm-3.0.3-2. When a binary rpm is installed after building with this version, the /usr/doc/package-version directory is given permissions of 644 not 755. Non-root users can't cd to the documentation directory.
The problem here has to do with scoping of %attr over %doc and will be addressed after rpm-4.0 is released.
*** This bug has been marked as a duplicate of 3230 ***