Steps to 'repo' - if you were indeed just missing the wiki templates don't know if we should call it an outright bug, but you could still file it in bugzilla as an RFE of sorts I suppose.
5.0.10_GA_2638.RHEL5_64
Remove /Template folder from global wiki account (or applicable domain wiki account).
User > Notebook > Page1 (content 'user') & Page2 (content 'another page') > share as manager with User1
User1 > Notebook > Page1 (with content 'user1 material') & dog (content 'cat')
Accept share/Link to shared notebook > user's notebook > Edit Page1 > brings you to contents of 'user1 material' > saving saves goes into user1 account > Page2 lets you edit, but nothing shown in user1's notebook on save > create page3 > again disappears on save.
Showing ok URL:
Improper URL of share:
Deploy templates (admin console or 'zmprov help notebook' will show you usage):
-Shows all prior modifications by user1.
-Grabs the server hostname / applicable public service hostname/protocol/url as well.