In the grassy area, on opposite side of dock, right side things keep getting stuck. Pick up all option is not a option at this time, due to the fact I have way to many items down. It is pretty much only in the curve because just on this side of that curve you can pick the items up.
If you open your attic, there is a tab for 'house'. This shows all the items you have placed in your house. From there you just choose the item that is 'stuck' and click 'pick up' or something to that effect. I had to use that method to get the feathers wall hanging unstuck from the wall.
hmm you should try to prevent that from happening again or try to fix bug.