So after upgrading to 7.2.4 I found a strange issue.

This happens in multi-mailbox mode.

user1 lives on server1, user2 lives on server2, user3 lives wherever.

If user1 shares a folder with Admin privs to user2, everything works
If user2 now attempts to re-share the folder with user3 the URL displayed at the bottom of the share screen are wrong exposing actual server names instead of zimbraPublicServiceHostname and user3 can not accept the share.

Has anyone seen this issue or found a workaround for it?