See upcoming testcase. The xul:hbox has now a computed height/width of 0px in current trunk builds, inside a html document, so you won't see it anymore. You can see it in older builds. Uri mentioned in bug 299250 that this regressed between 2005-12-15 and 2005-12-16, so my guess is a regression from bug 307992.
*** Bug 329050 has been marked as a duplicate of this bug. ***
Flags: blocking1.9a1? → blocking1.9-
*** This bug has been marked as a duplicate of 321402 ***
Status: NEW → RESOLVED
Last Resolved: 12 years ago
Resolution: --- → DUPLICATE
You need to log in before you can comment on or make changes to this bug.