The bug is already explained in the upstream bug: https://bugzilla.mozilla.org/show_bug.cgi?id=267512 In pages with <iframe style="visibility:hidden">, the iframe is actually shown. The problem occurs in both recent Firefox and Mozilla on RHEL4. The problem was also tested on FC4, where only epiphany was able to show the page with an hidden iframe correctly.
The impact of this is high enough to carry forward the request to the next Update. In addition it is not unlikely that there will be other requests for this component possibly justifying a QA slot. Moving to the next Update, clearing all ACKs.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Development Management has reviewed and declined this request. You may appeal this decision by reopening this request.