LPS-27163 a new parameter was added to a method of the portal GroupService API used by the so-portlet. This caused a compilation error at so-portlet for 6.2.X. To fix this, I changed the so-portlet so that it uses the new method passing the default value for the new parameter. If the change at LPS-27163 has not been backported to 6.1.x EE, then the change for the so-portlet shouldn't be backported neither.
Please confirm if
LPS-27163 is going to be backported. Otherwise, I will have to revert the changes in so-portlet and add an overloaded version of the method in the GroupService which matches the one used by so-portlet.