777924 - Opening a popup window causes web page parts to be rendered in incorrect spots

Status: RESOLVED FIXED

Description

[:Ehsan Akhgari (needinfo please, extremely long backlog, Away 8/23)]

STR:

1. Open https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Editor
2. Focus the CC field, and type in ":aryeh" without the quotes.
3. Wait shortly for the helper popup window to be open.  Parts of the web page would suddenly get drawn in different spots.

Alice, do you have access to a Linux machine which can reproduce this?  It would be great if you can find a regression range for us if you do!  :-)

Here's the gfx section of my about:support:

  Graphics

        Adapter Description
        Tungsten Graphics, Inc -- Mesa DRI Intel(R) Sandybridge Server

        Vendor ID
        Tungsten Graphics, Inc

        Device ID
        Mesa DRI Intel(R) Sandybridge Server

        Driver Version
        3.0 Mesa 8.0.2

        WebGL Renderer
        Tungsten Graphics, Inc -- Mesa DRI Intel(R) Sandybridge Server  -- 3.0 Mesa 8.0.2

        GPU Accelerated Windows
        0

        AzureBackend
        skia

Comment 1

[Alice0775 White]

I can reproduce with HWA off.

Regression window(m-c)
Good:
http://hg.mozilla.org/mozilla-central/rev/82b6c5885345
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 ID:20120722190243
Bad:
http://hg.mozilla.org/mozilla-central/rev/d78729026fb9
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 ID:20120723063342


Regression window(m-i)
Good:
http://hg.mozilla.org/integration/mozilla-inbound/rev/9302468f64fa
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 ID:20120722192842
Bad:
http://hg.mozilla.org/integration/mozilla-inbound/rev/a5ee3b2e133a
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 ID:20120722200242
Pushlog:
http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=9302468f64fa&tochange=a5ee3b2e133a

Comment 2

[:Ehsan Akhgari (needinfo please, extremely long backlog, Away 8/23)]

I'm gonna say that the three patches from bug 539356 regressed this!

Comment 3

[Matt Woodrow (:mattwoodrow)]

I can't reproduce this, but I do get parts of the page drawn wrong if I reload after opening a popup.

Do you have any addons installed that might affect this?

Comment 4

[:Ehsan Akhgari (needinfo please, extremely long backlog, Away 8/23)]

(In reply to comment #3)
> I can't reproduce this, but I do get parts of the page drawn wrong if I reload
> after opening a popup.
> 
> Do you have any addons installed that might affect this?

I have Bugzilla Tweaks and BugzillaJS installed, but they both simply modify the DOM.  It might help if you install them, but I don't believe they're at blame here.  Alice could reproduce as well.

Comment 5

[Matt Woodrow (:mattwoodrow)]

Created attachment 646430 [details] [diff] [review]
Invalidate layers when transitioning out of flattening component alpha

With those addons I get incorrect drawing when the page loads, I don't even need to touch the popup.

This patch fixes all the issues I can find.

Comment 6

[Matt Woodrow (:mattwoodrow)]

https://hg.mozilla.org/integration/mozilla-inbound/rev/73d5c4461f12

Comment 7

[:Ehsan Akhgari (needinfo please, extremely long backlog, Away 8/23)]

https://hg.mozilla.org/mozilla-central/rev/73d5c4461f12