I've seen posts about symbolic link issues, but they were supposedly fixed. With opus v12.20 I've created a symbolic link like:
mklink /d c:\stuff \\server\d\target
If from my computer I go into \stuff folder and rename a file there, it doesn't appear that I did unless I do a refresh. Same problem with deleting a file. Strangely, the Folder Tree does show updates done there immediately. The refresh works correctly with Windows Explorer.