In the adder dialog for groups the checkbox has been modified to use the correct field name "nonposix" and be checked by default. Note: This is a temporary fix to minimize the changes due to release schedule. Eventually the field label will be changed into "Non-POSIX group" and the checkbox will be unchecked by default, which is more consistent with CLI. Ticket #1799
http://www.freeipa.org/page/UI_Unit_Tests