This one challenge (the battlepass one) has been stuck on my club challenges for a few months now and i cannot get rid of it. Uplay says it's completed but the challenge itself says it's not. This is not a huge problem but it'd be nice to have it resolved somehow.
Hey Semi-Senioritis,
Does it only appear as active in your Uplay client?
Have you tried adding a new challenge or re-installing Uplay?