If you want to unhide and view the user library in the Finder view of a particular TM backup:

Navigate to the backup on the TM disk you wish to view. Select your Home Folder in the user folder of that backup. Right click on your account name (control Click) and then hold down the Option Key. Select copy “” as Pathname.

Then, go the the Finder, select Go from the menu, then Go To Folder and paste the copied pathname to the window. Add /Library to the end of the pathname in the window, then hit Go. A Finder window show open that backup user Library folder.