Exiting Whiterun today, the slain dragon Mirmulnir dropped from the sky. I was just setting out to find the Greybeards, so this occurred after the quest where I killed the dragon. I reloaded a previous save outside of Whiterun and nothing happened, but when I fast traveled to another location, it dropped from the sky and landed there. I'm not sure yet if this is going to happen whenever I load in the world, or if this glitch is a sign of a corrupted save. Any help or insight would be appreciated. Anyone else having this problem?