Last modified: 2012-05-03 02:42:41 UTC
Reproducible on trunk only, 1.18 is ok. Steps to reproduce: 1. Open Special:ListUsers/sysop: http://en.wikipedia.beta.wmflabs.org/wiki/Special:ListUsers/sysop 2. Select another group from the dropdown, submit the form. Expected result: The members of the new group are shown. Actual result: The URL becomes something like http://en.wikipedia.beta.wmflabs.org/w/index.php?title=Special%3AListUsers%2Fsysop&username=&group=bureaucrat&limit=50 and the /sysop overrides the &group=bureaucrat
Good catch.
Appears to be caused by r97658
r110836