wenn you are in the disk usage in a Folder and you create, delete or make a change in it the usage dont show the change 1.  2.  only after i leave and return to the Folder the new Folder will be shown in the usage 3. 
wenn you are in the disk usage in a Folder and you create, delete or make a change in it

the usage dont show the change
1.
only after i leave and return to the Folder the new Folder will be shown in the usage

3.