Under /shared with root user.

1) Create a new directory "test"
2) Select this directory from shared. Open the move sub-engine and click on cancel (finally you do not want to move it).
3) Let the directory selected and click on create new directory. Enter the name of your new directory.
4) your Test directory (with all the files inside) has dispappeared. You can close and reopen the engine it is the same. If you retriy the operation with another directoy, suddently your previous directoy appears (but not the intermediate one).