[LD] Everything is short-lived: Some tasks don't fulfill

I tried to complete the favor « everything is short-lived » (« Tout est éphémère » en français) in the expansion pack « Life and death » but the second  (create a mémorial) marked not complete when i’ve done it. So I can’t so the last task (delivering the picture) and can’t fullfill the favor. I tried to delete the favor and try again but the same bug is appearing. Could you fix it please? Or tell me if there is a solution that I can try?

Edit By Crinrict: Added Tag to Title, Adjusted Title