- references should be readable to unprivileged users on Wikidata when an item is protected
- browser test for expected behaviour of references with protected items
Try visiting https://www.wikidata.org/wiki/Q6691 when logged out - the links for the references are greyed out, and you can't click on them to display the reference. The same thing happens at https://www.wikidata.org/wiki/Q5 - but they work fine at https://www.wikidata.org/wiki/Q1513315 . And if you are logged in and view the same pages, they work fine.
It looks like this is related to whether the Wikidata entry is protected from editing or not (possibly just semi-protection?). However, page protection should not affect what information is visible on the Wikidata entry!
This issue was originally pointed out by Fram at: