Same as Fig. 1, but for a system that became unstable after the gas–disc phase with two surviving inner planets. We mark all surviving planets in colour. The planet marked in yellow stops growing at around 700 kyr, when it acquired an eccentricity too large to allow the accretion of pebbles. Once its eccentricity is damped below 1%, it continues to grow via pebble accretion. The system corresponds to system number 21 in Fig. C.1.