The URL doesn't work, the list is shown empty with "Users" selected in the dropdown; you need to use https://meta.wikimedia.org/w/index.php?title=Special:GlobalUsers&username=&group=New_wikis_importer instead (hence urlencoded URLs don't work).
Note that &username= is required because of bug 34016.
Version: master
Severity: normal
URL: https://meta.wikimedia.org/w/index.php?title=Special:GlobalUsers&username=&group=New+wikis+importer