Falling out of the world...

Well... I was digging a hole straight down to make a basement, and realized I needed to get back up. So I was jumping as I placed dirt underneath myself...and before I knew it, I was going through the dirt, and far, far, down, until the screen said "GAME OVER". Oh boy. :$ I could see the undersides of the trees around my house as I fell, and I saw outlines of caves. Definitely buggy...

Yeah..... I didn't know that was a thing until after this happened )': I lost a /lot/ of ore that I was waiting to smelt