On my server, upon exploring a Jungle that had already been generated, the world froze. Upon re logging, I was in the same place I was when the world froze. The server only crashes upon me stopping the server. Thinking it was a server error, I put the world in single player and the same issue occured. I've tried to recreate this bug but have failed to do so.

A video of the issue: https://www.youtube.com/watch?v=8XmSu_I08SI&feature=youtu.be

Edit: Just realised the game froze once I created a map (the one in my hotbar)