As mentioned in Bug 102187 (which I cannot reopen) it is wrong to source /etc/profile or /etc/profile.d/*.sh from /etc/zshrc. That is already done in /etc/zprofile and that is the correct place for such an operation. Sourcing the files twice will override user's settings in ~/.zprofile. Please see zsh man pages or consult zsh mailing lists if in doubt. Thanks.
*** This bug has been marked as a duplicate of 102187 ***
Oh, a critical typo. I guess my complaints start to do more harm than good by now but I was referring to a wrong bug, the one which talks about this problem is Bug 126539. Anyway, I'll leave this closed for now allowing you to check these things at better time. Sorry about the confusion.
Bug 102187 was for RHEL. Let's make this a Fedora bug and a duplicate of bug 126539 and reopen that. :) *** This bug has been marked as a duplicate of 126539 ***