I'm not sure exactly when it started but I suspected it was when my computer video card crashed causing me to force off it through the power button. After relogging the first thing I noticed was that several individual chunks around me had different biomes such as a desert chunk in the middle of forest chunks. After I returned to my main base, I noticed many problems that occurred such as leaves block would decay naturally without me clearing it, farmland that was tilled would not hydrate even with adjacent water blocks and wheat, carrots and other plants would not grow at all no matter how long I waited (tested 2 day/night cycles). Is there any way to fix this problem while retaining my original world?