This absolutely happened to me. I was in Europe for two weeks, finally got back on Friday and logged in. Was looking around and like, "hmmm, where's that dandy little emblem I worked so hard for at?" Finally looked at the MoT and the chests were reset to ZERO. What the WHAT? Come on. That's such a ridiculous bug and it sucks that something so silly can make all of us feel petty for asking you to fix it.