The animals that I have under my house had despawn. I am sure that I interacted with them through breeding and feeding, I did not go to the nether, and I am the only player at the moment . Also, the newly crafted cakes are gone. They are no where to be found. I checked all possible places like the chests and barrels around and under the crafting table that I used for crafting the cake. I did it 3 times and for sure my inventory at that time is not full but for some reason, I cant find them. I noticed the problem at my second try.

Honestly it's not a big of a deal for me but it is a bit inconvinient and I just hope this doesn't happen to me again or to anyone else.