137970 - Portions of an image appear at the bottom of page after QT plug-in has been initialized.

Status: VERIFIED WORKSFORME

(Core Graveyard :: Plug-ins, defect, P2)

Description

[Charles Mak]

Release 0.9.9
Windows XP Professional

Steps:
  1) Go to http://www.apple.com/trailers/index.html
  2) Scroll down a tiny bit (doesn't matter how little)
  3) Click on any link on the page.
  4) Click on the back button.
  5) Notice that part of the page now has a background of black instead of white.
  6) Scroll up and down and you'll notice the background returning to white.

This appears to only affect the part of the page that is longer than the initial
height when visiting the page. So the bug isn't seen when first visiting the
page, but it is apparent when clicking back after scrolling down a bit.

Comment 1

[Charles Mak]

Attachment: Screenshot of problem.

Attacking screenshot of problem.

Comment 2

[Boris Zbarsky [:bzbarsky]]

to dbaron; this is a dup of something he's fixed since 0.9.9

Comment 3

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

I'm not sure what, though.

->worksforme.  Please reopen if you see the problem in a current nightly build.

Comment 4

[Charles Mak]

Ok, just checked out the nightly build. It is fixed. Sorry for the dup!

Comment 5

[James Cox]

v

Comment 6

[Stephen Gevers]

I'm experiencing the same thing as the reporter.  I am using Build 2002041711. 
I cannot reproduce the bug at will, but it seems to recur frequently and only
while I'm looking at my.yahoo.com.  I'm using Windows 2000 on an IBM Laptop.  I
can't reproduce it using WIN2K on an IBM desktop and the same build.

The my.yahoo.page is created with a scrolling background image and tables.  I
see this problem when I scroll down on the my.yahoo.com page, select an article
to read that also has a scroll bar, scroll the next page (usually not all the
way to the bottom) and then hit the back button.  The black background
illustrated in the screenshot attached will also go away if you minimize the
browser or if you cause it to repaint by placing another window over the
browser.  Only the part of the window that is repainted will be redrawn with the
correct background.  I did not experience this problem prior to Release 0.9.9.

I attached a screen shot that looks alot like the first one attached.

Comment 7

[Stephen Gevers]

Attachment: Another Screenshot

Comment 8

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Could you try in a current build?  I think dcone changed background tiling code
again because it wasn't working on some video drivers on Windows.

Comment 9

[Stephen Gevers]

I downloaded the mozilla-win32.zip file from
http://ftp.mozilla.org/pub/mozilla/nightly/latest/ and unzipped it into a new
directory.  The build id is 2002042403.  I haven't been able to reproduce the
problem with either the nightly build.  I also can't reproduce the problem in
the 1.0 RC1 browser that exhibited the problem before.  I don't know if the old
browser is using a new DLL or what, but I can't get either to have the problem.
 I'll keep using the 2002042403 build on my laptop and if I see the problem
again, I'll report it back here.

Comment 10

[Charles Mak]

The problem is again visible on my computer in the night build.

Comment 11

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

OK, reopening and assigning to gfx component.

Comment 12

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

... and reassigning.

Comment 13

[Richard Ekle]

This bug happens on http:/my.yahoo.com using Mozilla 1.0rc1.  It can be
reproduced using the steps described below.

Comment 14

[Kevin McCluskey (gone)]

WFM: Using 2002050108 trunk build on WinXP. 

Comment 15

[Susie Wyshak]

Replicated on the Apple URL and my.yahoo with Win2K, build 2002043006

Changed platform to All.
Marked topembed to to the visibility of these sites. 

Comment 16

[Winnie Lam]

I just tested with build ID: 2002050306.  Clicked on one of the links at the
bottom of the page, clicked Back.  I was returned to the bottom of the original
page, and there appeared a background with colorful streaks across the screen. 
I scrolled back up to the top of this original page, and then back down to the
bottom of the page and the colorful streaks were gone.

Petersen, could you put up a testcase and determine how reproducible this is? 

Comment 17

[Chris Petersen]

With the Windows ME build (2002-05-03-06 1.0.0), I can't reproduce the problem
with my.yahoo.com. Hoever, I do see the problem described in Comment 16#.
Navigating back to the apple quicktime page, I see a gray horizontal ban
(running the width of the page) behind the movie posters images. This is not
occuring on the Mac OS X builds so this might be a windows only issue.

Comment 18

[Chris Petersen]

The problem is related to mov file that is rendered by the QT plugin. Sample
test case   is made I just need to attach it.

Comment 19

[Chris Petersen]

Changing component to plug-ins

Comment 20

[Chris Petersen]

Attachment: Reduced test case that contains a image and QT movie in separate tables

Comment 21

[Chris Petersen]

Open test case and resize window so that both horizitonal and vertical
scrollbars appear. Press the reload button. Small portions of the image appear
at the both of page.

Comment 22

[rubydoo123]

on win98, using the trunk build from 20020507 I cannot reproduce this bug. I
went to the trailers page, went to yahoo and tested the test case petersen attached.

Comment 23

[Stephen Gevers]

Is the QT plugin being utilized by the my.yahoo.com page (the second
attachment).  I don't know if this information is useful or not, but the source
html for the page shows the "body" tag with a background attribute which
specifies a .gif image located at
"http://us.i1.yimg.com/us.yimg.com/i/us/my/th/sp/bg.gif".  Essentially, I
customized to have a "sports" theme.

Originally, this only seemed to be happening on my IBM laptop, but I have since
had it occur on both my work IBM desktop (I don't know what kind of video card)
and my home desktop (All-in-Wonder 7500 radeon agp).  I'm just concerned that
this problem is more generic than the QT plugin.

Comment 24

[shrirang khanzode]

i can repro it.

just go to http://www.apple.com/trailers/index.html
resize browser window so that both scrollbars appear
then scroll down vertically and click on EPISODE II Mystery .. 
''http://www.apple.com/trailers/fox/episode-ii/mystery/'

now, click BACK

observe the black portion of the page.

 

Comment 25

[Stephen Gevers]

The reason that I brought up the background image is that the background image
was the only thing that was replaced by the black solid fill.  Notice in the
second attachment that the content on the left hand side has a solid white
background rather than the sports theme gif background image and that it did not
get overridden by the black fill.  

Comment 26

[rubydoo123]

Shrir: I still cannot repro the bug

Comment 27

[Susie Wyshak]

Replicated in Gecko/20020507 on my.yahoo.
Is the Yahoo problem a separate issue? I don't see where Quicktime is used.

Comment 28

[Peter Lubczynski]

I'm sort of seeing this following Shrir's steps in comment #24 on WinXP,
2002050606 1.0 Branch, except it doesn't stay black! We seem to get an
invalidate and update the black portions to white, but I can surely see it.

Comment 29

[rubydoo123]

very strange, I think all of you should follow my lead and stick with win98 :0)

Comment 30

[shrirang khanzode]

susie: yeah..my.yahoo.com does not seem to have qktime...hm..
but there is a flash movie on top of the page 
(http://us.a1.yimg.com/us.yimg.com/a/1-/flash/godiva/050202_2b_super.swf)
 

Comment 31

[Winnie Lam]

beppe, regarding your comment #29, I was testing with Win98 in my comment #16.

Comment 32

[rubydoo123]

using the NSSetupB.exe from 20020509 on win98, I cannot repro this bug. The
pages load just fine, I do not see anything rendered incorrectly.

Comment 33

[Susie Wyshak]

WFM also with Gecko/20020509 on my.yahoo.

Comment 34

[Stephen Gevers]

Apparently this is related to the flash movie.  I found the problem again on a
page with a flash advertisement.  Initially I thought the problem had been fixed
because I tried it on a recent nightly build and it didn't happen.  Then I
realized that the flash plugin had not been installed on the nightly build that
I was using.  After installing the flash plugin, the problem showed up again. 
It is still there on RC2.

Comment 35

[Stephen Gevers]

More info:  Here is the URL that I'm visiting that exhibits the problem right
now...don't know how long it will be valid:
http://biz.yahoo.com/bizwk/020511/nf200205108475_1.html
Also, I just noticed that the problem doesn't happen if the scroll bar is all
the way at the top.  Further, it seems that the size of the black area appears
to grow the further the scroll bar is scrolled down.  I'm going to include an
attachment with two screen shots.

Comment 36

[Stephen Gevers]

Attachment: Two screen shots of the problem.

The first image has the scroll bar down slightly and shows that the back ground
has only turned black on about the bottom fourth of the screen.  The second
image shows that the scroll bar is down farther and the back ground has turned
black over the whole screen.

Comment 37

[rubydoo123]

I can not repro this issue with the apple trailers -- could it be because I am
using QT6?

Comment 38

[rubydoo123]

The plug-ins triage team (av, beppe, peterl, serge and shrir) have reviewed this
issue and have made the following determination:

Tested on winXP, win2K and cannot reproduce, marking as WFM, Shrir will verify
on macOSX and Linux

Comment 39

[shrirang khanzode]

this is gone, tested on linux and os x branch builds 0711.