Yup - newly flashed, again, with 1.2.0 12CT:
firmware = emon_DB_12CT
version = 1.2.0
hardware = emonPi2
voltage = 1phase
vCal = 101.30
iCal1 = 100.00, iLead1 = 3.20
iCal2 = 50.00, iLead2 = 3.20
iCal3 = 50.00, iLead3 = 3.20
iCal4 = 50.00, iLead4 = 3.20
iCal5 = 50.00, iLead5 = 3.20
iCal6 = 20.00, iLead6 = 3.20
iCal7 = 20.00, iLead7 = 3.20
iCal8 = 20.00, iLead8 = 3.20
iCal9 = 20.00, iLead9 = 3.20
iCal10 = 20.00, iLead10 = 3.20
iCal11 = 20.00, iLead11 = 3.20
iCal12 = 20.00, iLead12 = 3.20
pulse = 1, pulsePeriod = 0ms
RF = off
datalog = 9.80
json = off
MSG:4,V1:240.02,F:49.98,P1:151,P2:79,P3:61,P4:13,P5:0,P6:0,P7:0,P8:1,P9:0,P10:0,P11:0,P12:0
MSG:5,V1:239.76,F:49.98,P1:151,P2:79,P3:61,P4:13,P5:0,P6:0,P7:0,P8:1,P9:0,P10:0,P11:0,P12:0
I think the key difference here is RF is on in your example, and off in mine due to it being embedded in the EmonPi. As per this answer: Tx4 CT6 not sending Energy data - #7 by TrystanLea