Mine is really strange as well. Opened the game this morning, and cleared it from finished tasks.
Got the "all 7 adventure flights done" and the menu with Norbert's red plane. - Yihaa! was my thought, bug solved. Tapped "Do it" and the menue changed to "all adventure tasks completed - wait 24 h", and it showed the Luggage menu.
Although I could send one flyer to Woodstock, so I did and left the game. Came back 2 h later, again the message "all adventure tasks completet - wait 24 h", but with the opportunity to send one to W. Africa - with the Woodstock flight still running for another 2 h. Hmmm...
Didn't have a flight to W. Africa in my list (although I had Bart on two destinations), so I went to KL, and back. Then I found a flight for W. Africa.
I wonder if those two flights will count separately, as one, or not at all.
Edit. If I try to write the destination in W.Africa (N. Igeria) it is changed to ****! WHY? Its a name of a country!
Edit 2 : Oh my... Now I also get the "collect pins for bonuts", but I still miss 200 pins for the Samba school