CMS: WordPress 4.4.2
After upgrading from 4.6.6 to 4.7.1, when someone submits our contribution form for a free membership, the membership is not recorded in the contact record nor in the CiviMember area.
The contact makes it in the Contacts area and database OK but wondering why the connection to CiviMember was severed. We can manually attach a membership to the contact fine, but long-term this is not a solution.
Edit: What's worse is that these contacts have no record of their "contribution" (they came from a contribution form). So, they aren't displaying in "Find Contributions" either. Our memberships are free, so there is no paid transaction happening.