186696 - No scrollbar paint over position: fixed; div

Status: RESOLVED FIXED

(Core :: XUL, defect)

Description

[Felix Miata]

Trunks: Linux 2002122408 & W32 2002122408

To reproduce:
1-Load testcase in short/narrow viewport
2-Mouseover horizontal scrollbar

Actual result:
1-Half of horizontal scrollbar painted before mouseover
2-3/4 of horizontal scrollbar painted after mouseover

Expected result:
1-All of horizontal scrollbar painted regardless of mouseover

Testcase and screenshots to follow.

Comment 1

[Felix Miata]

Attachment: HTML/CSS testcase

Comment 2

[Felix Miata]

Attachment: W32 640 x 480 resolution screenshot - before mouseover

Comment 3

[Felix Miata]

Attachment: W32 640 x 480 resolution screenshot - after mouseover

Comment 4

[Felix Miata]

Attachment: Linux 1024 x 768 resolution windowed screenshot - before mouseover

Comment 5

[Oliver Klee]

Possibly a dupe of bug 183495.

Comment 6

[Felix Miata]

Could be. Searches I do could never have turned up so narrow a summary. cc to
that bug's assignee.

Comment 7

[José Jeria]

Cannot reproduce this with build 2003042708. Can anyone else re-test?

Comment 8

[Maarten Afman]

CANNOT reproduce with 2003042904 
CAN reproduce with Mozilla 1.3 final
CAN reproduce with Firebird 20030429 

tested under W2K.

Comment 9

[Eric Hodel]

I see this, WinXP: 20030411 Phoenix

Definitely related to bug 183495

Comment 10

[José Jeria]

So this seems to be a firebird specific bug now?

Comment 11

[Scott Douglass]

Attachment: Example of scrollbar v. fixed div rendering bug

Happens on Win32 and Linux. Tried release versions 1.2.1, 1.3.1, 1.4b, and
1.4CVS built myself (last on Linux only). Doesn't happen in IE on Windows.

Comment 12

[Felix Miata]

Still happens in 1.4rc2 W32
http://bugzilla.mozilla.org/attachment.cgi?id=125988&action=view (bug 206482)

Comment 13

[basic]

maybe video card/driver related?

Comment 14

[Felix Miata]

1.4rc2 Linux, OS/2 and W98 all err. However, each errs slightly differently. On
Linux, the improperly painted area is all black until you click it a second
time. Upon second click, the black is gone, replaced by fractional opacity of
the scrollbar color. OS/2 paints as expected, though slowly, allowing a brief
view of the fixed div before proper painting. Also, if covered by another
window, then uncovered, it will be unpainted until clicked. W98 leaves it
partially painted with the fixed div on first click, paints properly on second
click.

Could be graphics adapter related, as all three machines use the exact same
orphaned card.

Comment 15

[Felix Miata]

Live URL added: http://gemal.dk/browserspy/window.html. Make your window narrow
enough and the vertical scrollbar is littered by the fixed div nav on the right.

Comment 16

[José Jeria]

Attachment: Minimized testcase.

This bug seems to be visible when position:fixed; is on an element with
width:100%; and a background-color. Removing the background-color and adding a
border for example does not show the bug. 

This is the same as bug 183495.

Comment 17

[Jean-Marc Desperrier]

Marking dependancy of bug 232469, the bug bug 183495 depends on.

Comment 18

[Boris Zbarsky [:bzbarsky]]

Is this an issue now that bug 232469 is fixed?

Comment 19

[Robert O'Callahan (:roc) (email my personal email if necessary)]

looks fixed to me

Comment 20

[José Jeria]

Also works fine for me after the checking of bug 232469, marking fixed.