When you pause the game and wait a little while the game will continue but time will speed forward and continue. The reason why I think this is a bug/glitch is that when continued, you have a chance of getting killed by mobs and other things. My incident was when I continued I was in my new shelter and was shot by a skeleton many times and died in about a second.
Steps to recreate a similar event:
1. Start a new world with snapshot 13w41a
2. Pause the game for about 10 minutes out in the open so you are exposed to mobs.
3. Un-pause the game and wait to see if same incident occurs.
Linked issues
Comments

Duplicate of MC-34641 - 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.