Renaming a shadowed user incorrectly renames the associated stash user

In the following directory structure:

• Directory 1
  • user 'bob'
• Directory 2
  • user 'bob'

directory 2 user 'bob' is shadowed by directory 1 user 'bob' and is hidden. If you rename directory 2 user 'bob' to 'robert' it is a logical creation of user 'robert' but stash incorrectly renames the 'bob' stash user to be 'robert' and crreates a new 'bob' stash user.