In the screenshow below I can lock in a loss of £0.19. The small figures show what I am locking in individually ignoring the other selections. The 2 losses add up to the total £0.19.
It is always displayed like this on a market where there is only 1 possible outcome. The other markets you are trading must be markets where there are multiple possible outcomes (eg. total goals) therefore only the 1 figure is relevant which is equivalent to the small figure on 1 winner markets.