Last modified: 2013-10-08 14:15:23 UTC
It doesn't make sense to have the user rights management link show when looking at an IP user, since you can't change the user rights of an unregistered user. This is similar to https://bugzilla.wikimedia.org/show_bug.cgi?id=22047.
Should be easy to fix, since the link already appears conditionally when the user viewing the contributions page has the right to change user groups.
Patch in review https://gerrit.wikimedia.org/r/87672
Change 87672 merged by jenkins-bot: (bug 54980) Remove toolbox UserRights if anon user https://gerrit.wikimedia.org/r/87672