401027 - XUL menupopups in HTML document doesn't show up correctly with testcase from bug 400976

Status: REOPENED

(Core :: XUL, defect)

Description

[Martijn Wargers (dead)]

See bug 400976, comment 2:
"
This was repaired on trunk but it regressed again. Regression range for this is

http://bonsai.mozilla.org/cvsquery.cgi?module=PhoenixTinderbox&date=explicit&mindate=1186421100&maxdate=1186423079
so it is probably caused by Bug 355789.
"

and this is what can be seen on trunk for that:
https://bugzilla.mozilla.org/attachment.cgi?id=286077

You should see a normal popup with the word "POPUP!" in it.

I'm filing this as a bug for trunk, bug 400976 is meant as the bug for the regression on branch.

Comment 1

[Martijn Wargers (dead)]

Attachment: testcase

This testcase is almost the same as the one from bug 400976, except this uses
elt.showPopup();
document.body.offsetHeight;
elt.showPopup();
in a timeout.

This seems to cause the issue as with the image that Ria attached, but I'm also sometimes seeing a scrollbar in the document appearing with a very large area to scroll.

Comment 2

[Ria Klaassen (not reading all bugmail)]

When I click the testcase link here using my default profile, there's a big chance that the popup shows up correctly. To reproduce the problem, paste the testcase link in the locationbar of a new profile and hit Enter.