Change Details

Following https://phabricator.wikimedia.org/T265872 there should be a test, that checks that there is only one popup at a time for reference previews.

Following {T265872} there should be a test, that checks that there is only one popup at a time for reference previews.

Following https://phabricator.wikimedia.org/{T265872} there should be a test, that checks that there is only one popup at a time for reference previews.