Item in void storage are all gone. Server Frostwolf pandaria

As the title says, my character name Buun in-gane, this afternoon i put a lot of items including sets and weapons i was collecting from long time., around 2 years playing in server. I put them in void storage in shrine of the seven stars. When i came back after 6 7 hrs, i check again and all of them jst gone. Those items for me are all the time i play in the server with friends, so it means a lot to me. Please could you check and fix it ?

Thank you a lot and have a nice weekend.

Edit : today i checked again, the item appears, so idk if it was a bug and should i leave my items there still