[galaxy-dev] Incorrect User Disk Usage

Hello, We have a galaxy user who has only one history which occupied 239.9GB disk space. However, total disk usage, as showing at the top right corner, is 925.6GB. I have done dataset cleanup and run set_user_disk_usage, but the total is still the same. Actually, running set_user_disk_usage.py had added up about 90G to the somewhat 840G total disk space showning in his account. Anybody knows what could be wrong? Thanks, Ping