IGN(In Game Name): Volphyne
Bug: A Minecart with chest that was running back and forth along a 20 block long track disappeared. This minecart and chest had been running continuously for a few days since I put it on the track with no problems until today.
Time/Date: Sometime in the 7 hours between 8am and 3pm est May 21, 2014.
Steps to reproduce: The minecart was running back and forth on a 20 block long track of rails + powered rail. It was placed between 2 layers of hoppers in a type of randomizing sorter system. The minecart was also filled with random items.
@monkeyhead1999 Suggested the disappearance was caused by clearlag, however I tested this by placing another minecart and chest and a regular minecart. Clear lag came twice and they did not disappear.
Evidence: The only evidence I have is the track where it was located. I also filed a modreq that was answered by @monkeyhead1999 .