AGP (Malaga) to LGW last night (2 April) group 0 was announced first (I think just one person came forward) then group 1 separately with the gate staff rejecting people in groups 2-3 coming forward at that time (not helped by groups 1-3 being lined up in the same tensa-barrier line). Usual problem of queue jumpers simply barging in at the desk and ignoring the line entirely - which seems to be endemic in Malaga.
Outbound from Gatwick on 28th March groups 0 and 1 were called together.