Did some digging the forums since it happens to me as well. From what read is it's caused by a full inventory most of the time. If you try to craft or transfer an item into your inventory and there is no space it will cause the problem to occur. Try and keep at least 1 or 2 spots open to reduce the issue. All I can tell its going to into a limbo/hidden inventory buffer area that seems to store items information there, and highly reproducible. Re-logging and...