bug experience and duplicate mobs

Put the summary of the bug you're having here

What I expected to happen was...:
that experience had all its colors and the mobs did not duplicate

What actually happened was...:
I was calm on the pre release I killed a mob and the end of the donation experience was in black and white. Then I made the bug report in the video creeper and I did appear was made duplicate

Steps to Reproduce (1: experience) :
1. Kill a mob,
2. watching experience dropped by the mob
Steps to Reproduce (2: duplicate) :
1. spawn a mob.
2. if this does not work, try several times, and if that does not work, do appear in the grass. (With creeper).