I have all mercs, can I hold "The Last Guardian" quest?

[SparkyElf-2852]

24.4 Known Issues

Alright, so we’re getting reports (in this topic above and elsewhere [1,2]) that there are story tasks which are supposed to give a ‘Random Legendary Merc’ as a reward, however, they apparently give portraits instead (and not something like ‘give a random legendary mercenary that you don’t own, if you have all of them, then give a random unowned portrait for a legendary merc, elsewise give coins’), according to the community. Could you please clarify whether this is intended or not, and, if it i…