@suman @Flyer
FYI
I’ve updated yesterday from stable 3.9.0 to 3.9.0-3 in order to check if the new kernel / btrfs-progs do have any positive impacted to my share size / usage issue posted earlier here
After the upgrade and reboot I’ve realized that the server was hanging somehow / high CPU usage and the WebUI did not react, but after ~10min or so the system operated normal again 
All running well with this testing release, but share usage still look wired. I know it is not a critical issue, but annoying 
