the bug I am referring to is one where adding a new member to the UN or the AP (by colony formation or religion spread) on the turn of a vote causes this vote to be canceled - in case of the first resident/secretary general vote it even disables the AP/UN if it happens. This bug should be fixed in 3.17 - I have not seen it happen by religion changes and I don't believe that it works this way.
The real design flaw was using Vanilla code (for the voting) and not updating it to the BtS features that allow for new members to arise (in Vanilla and Warlords its impossible for this situation to occur) - but then again there is no use to

about things that should be fixed by now