211562 - bottom:0 abs positioned box is obscured by the horizontal scrollbar

Status: NEW

(Core :: Layout: Positioned, defect)

Description

[Mats Palmgren (inactive)]

bottom:0 abs positioned box is obscured by the horizontal scrollbar,
it works fine for the corresponding right:0 vertical scrollbar case though.

REPEAT BY:
1. Load testcase

ACTUAL RESULT:
The last line is obscured by the horizontal scrollbar.

PLATFORM & BUILD:
Mozilla nigthly trunk build 2003-07-01-07 on Linux

ADDITIONAL INFORMATION:
This bug was spawned from bug 197448 comment 2.

Comment 1

[Mats Palmgren (inactive)]

Attachment: Testcase

Comment 2

[Mats Palmgren (inactive)]

*** Bug 214995 has been marked as a duplicate of this bug. ***

Comment 3

[:aceman]

Isn't bug 234393 actually a duplicate of bug 211562?

The last line in the testcase is really obscured. There is no vertical
scrollbar. But you can scroll the page using the arrow keys. That is interesting.

I can confirm this with Firebird 20040128. It was working in Moz 1.5.

Comment 4

[:aceman]

I have even seen a case where a div positioned at bottom: -20px; appeared OVER
the horizontal scrollbar (was drawn at a position outside of the page but
obscured the scrollbar). The div had a style so that when hovered, it changed to
bottom: 0px;. In that moment the position was computed correctly and the div
moved up so that it exactly touched the scrollbar on its top.

That is very interesting but I am working on a test case for this (a have a page
which does this everytime, but is very complicated, using JS and such stuff). I
can 100% reproduce it everytime but can't yet publish a testcase :(

Comment 5

[Justin Turner Arthur]

*** Bug 234393 has been marked as a duplicate of this bug. ***

Comment 6

[:aceman]

I can no longer reproduce the bug with firefox 0.10.1 on the attached testcase.
Can somebody else?

Comment 7

[Justin Turner Arthur]

I am still able reproduce this bug in Mozilla 1.8a4

Comment 8

[:aceman]

I can see it too in Firefox 1.5b1. There also is a vertical scrollbar on the right.

That seems to be a regression.

Comment 9

[Phil Endecott]

From bug #211562, another testcase:

https://bugzilla.mozilla.org/attachment.cgi?id=175841

Here it's a pair of nested divs.

Comment 10

[Gérard Talbot]

I believe this bug should be resolved as DUPLICATE of bug 44192. attachment 126993 [details] is excellent and should be made available at bug 44192.

Comment 11

[Boris Zbarsky [:bzbarsky]]

This is not the same situation as bug 44192 -- that's for fixed-positioned elements.  The positioning rules are different.

Comment 12

[Gérard Talbot]

Ok, Boris. Thank you for clarifying this.

Comment 13

[Nickolay_Ponomarev]

I don't see this on Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:2.0b3pre) Gecko/20100725 Minefield/4.0b3pre, can anyone else still reproduce?