From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; 0.8) Gecko/20010215 BuildID: 20010306 When you specify a DIV element and use the CSS property overflow:auto to show scrollbars, it no longer responds to zindex. The border of the DIV element does but not the actual content. Reproducible: Always Steps to Reproduce: make a page w/ a div element. Set a explict size, width & position. Put enough stuff into the DIV that scrollbars appear and then position another element directly on top of it. Expected Results: Div element should go underneath others.

Jeremy, do you have an example page you could attach by any chance? Also, could you try enabling the new viewmanager [ user_pref("nglayout.debug.enable_scary_view_manager", true); ] and seeing whether that helps? (the old viewmanager has known bugs with positioned elements).

Jeremy, the attached testcase renders exactly the way it's supposed to for me with builds 2001-03-05-08 and 2001-03-07-14, old and new viewmanagers both, on Linux.

changing qa contact

Jeremy, I see the problem in your testcase (div does not disappear when you switch tabs). The problem is only there with the old viewmanager. With the new viewmanager (put user_pref("nglayout.debug.enable_scary_view_manager", true); in your prefs.js file to try the new viewmanager) the page renders correctly. See bug 39621 for the status of the new viewmanager, but the summary is that it should be turned on by default any day now. *** This bug has been marked as a duplicate of 14691 ***

VERIFIED dup new view manager will be turned on after 0.8.1