When Scarf Joint is on (any setting) CP does not create a brim on any object.
@CREALITY … there are so many bug and problems with CP5.1, in some cases it is NOT usable when wanting to print more than a single object at at time. PLEASE just develop on the main branch of Orca… your K2 is fantastic hardware but whatever you are doing the to slicer code base is making it horrible!