[MC-132997] Nether Fortresses spawn multiple chests with the same contents

Environment

Some chests in a nether fortress I found had the exact same contents. Same items, same layout inside the chest. I found 6 chests in a fortress with this problem.

Linked issues

duplicates 1

MC-130786 Chests spawning with the exact same items Resolved

Comments 2

migrated 2018-07-07T20:59:47Z

Please attach the crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt), otherwise we can not diagnose this issue.
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migrated 2018-07-14T21:28:09Z

What does this mean? I looked in that folder and the last crash was June 9. This report didn't have to do with a crash.