1.15.2 is the only version i know this effects. Logged out of my single player world. When i logged back in a suffocated and died. was confused until i respawned and saw all my chunk were corrupted. As shown in the screenshot my house is in pieces and my chests were all empty  meaning I lost everything I had worked on. I'm not that mad about it but would just like to report this so others do not have to experience this.