I really wonder how do people see "so many plot holes"? Because I can see ONLY TWO and even they are relative.
A plot hole is something that causes the plot या a part of the plot to not add up या to not make sense. These two फिल्में don't have such, as all आप have to do is pay attention to what is कहा and how it is said, and at some points to use common sense.
1.) The cub's डिज़ाइन and the ceremony.
But officially that is not a plot hole. As डिज़्नी has made it official it is "Fluffy"/Kiara in the movie universe. As in introduced no one else in the फिल्में - basically we just have to accept that...