iCloud Drive not shown

Bug: The iCloud Drive is not shown correctly on Macs. This concerns all macOS and OSX verisons supporting Apple's iCloud Drive. It is a special user folder and found in ~/Library/MobileDocuments, where as ~/Library is a hidden folder. It is possible to drag the iCould Drive into Favourits panel, but the folder is not recognized nor opened in Folder panel for further disk operations done within Bridge such as Move or Copy.