This is also happening to me. I had MCCC but have uninstalled and still having the same issue. I am on PC. This is on a brand new save I started 2 days ago, I just got the horseranch EP and am now having this issue when moving anything in a storage box over to my sims inventory. I have not had this issue with the fridge. I grab one item out of the storage box and move it over and it instantly grabs something else in the storage box and stays on my grab hand. I have tried clicking escape, repairing the game, going to manage worlds and coming back, clicking an empty space. The only thing that fixes it is exiting the game and coming back, and even then I still cannot drag items over or the problem repeats. The only two things I did before starting this save was download horseranch and update the game. Very annoying bug.
