Same here - when I just went ingame, the cell nr 5 suddenly had a milk task in it, that I dumped.
Hopefully corrected for everyone affected
p.s.: also had a reply from a human at CS (! ;-) ) that their "dev team is already aware of this and has released a quick fix for this problem. Please restart your device and check if everything's working all right. ..."
For me it worked even with just the game restart.