Not in particular but that isn't saying much because I've noticed other quests bugged. One which had to do with tossing him 3 times a day for 4 days. One day it said 90 something percent complete then the next day it was down to 70%.
That happens to me also. Actually none of the 3 or 5 day quest ever work for me. They never finish so I just pay 200 coins and skip them.
I've been thinking about getting this game but I'm still on the fence. Can't tell if there's that much to do with Om Nom or not. For an older guy I'll need more to keep me occupied
I think the main reason I'm still on the fence myself is because of the 3D art style. It takes a lot of its charm away from the original 2D character for me strangely.