Achievement not showing up.

Put the summary of the bug you're having here

What I expected to happen was
Get the achievement for finding the stronghold and finishing the End Portal and then going to the end. So the two End achievements being The End? and The End.

What actually happened was
Found the stronghold and finished the End Portal no achievement and then went into the end still no achievement so the End achievements did not happen.
Steps to Reproduce:
1. I do not know how it happened. Just kinda happened.