Challenge - Short Runway Practice - Bug?

This Challenge "Short Runway Practice" on Page with a C172, the "Fly Now" is shadowed?!?! Why?

I was doing all other challenges without any problem, why this one is not available?

Thank You!

i restarted the AFS4 and now its available, idk why it was not before....

Yes, its hard to find it again, because the mission was done, what i was doing was the challenges in a round, completing them, when i arrived to that challenge it was like that, i open others and was ok, when i repeat open that challenge, it still unavailable. I exist afs4, open again and it was all ok.

P.S.: by the way, it was better that "completed" tag not covers the airport tag. It will be cool if after completed we still knows the name of airport.

Thank You so much!