to the forum jw1313!
In that location it should be happy as a clam. Do you take it out of the deco pot to water it? Have you changed fertilizer practices - given less or more than usual? Have you ever fed it? If you usually just water it and it doesn't have much water flowing out of the bottom then it may not be staying moist enough except at the surface. Try putting it in the bath-tub and REALLY soaking it couple of times. It may be a build-up of calcium/magnesium salts ( from tap water )in the soil.
