duplication glitch

so I'm playing in the beta version of xbox one minecraft and I went to the nether where I died from a magma cube. when i died, i was able to get back quick enough for nothing to respawn. however, when I got there, I had double the amount of tools, gold, obsidian, magma and blackstone. I now have 2 diamond pickaxes. I'm not upset at this glitch whatsoever but it might need to be fixed for the official release.