Hi! Not exactly a game breaking bug, but you may want to look into it nevertheless:
12.902 Warning! Sprite at {0,0; 32x32} from __StoneWaterWell__/graphics/stone-waterwell.icon.png is defined with 4 mipmap levels, but level 1 is expected to be at {32,0; 16x16} which is out of bounds of the source image.