The easiest way to replicate the bug is to get on top of a high place, jump off and while in mid-air Save and quit, then come back.
I did this on accident. I wanted to change setting while falling, and I clicked "save and quit" on accident, when I came back, I wasn't hurt.
Duplicate of MC-212 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.