UE4 4.18.3 Always Stuck When Moving Folders

Hi all;
I dont like the editor mess.
So I create a new folder in editor to store relevant things in it.
When i choose some folders and drag to my new folder and click “move files” there is progress bar come to screen and it become %100 but after this editor stucks/freezes and i have to end the task from task manager.
Here is a screenshoot(look at the grey selection thingy behind the folders it stuck in there also the green circle animation in top-right is freezed too)