Members not getting posting access in communities when they accept invite

Steps to reproduce:
Set community to give posting access to all members.
Invite user to community.
User does not get posting access. (There's no box to check on the invite page which is good because they should automatically get it anyway).
You have to give posting access manually to all invited members.

Request: http://www.dreamwidth.org/support/see_request?id=29073