857961 - PDF rendering broken under FF 20

Status: RESOLVED DUPLICATE of bug 844570

(Firefox :: PDF Viewer, defect, P3)

Description

[J S]

Attachment: ffbug.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:20.0) Gecko/20100101 Firefox/20.0
Build ID: 2013032900

Steps to reproduce:

Open the PDF file: http://conal.net/talks/folds-and-unfolds.pdf


Actual results:

Font rendering broken (see attached screenshot).


Expected results:

Font rendering was correct under FF 19

Comment 1

[Loic]

WFM with FF20 on Win 7: http://i.imgur.com/7zTntUI.jpg (I selected 'Page Fit' as zoom settings)

Comment 2

[Matthias Versen [:Matti]]

wfm with Firefox20 on win7 (with and without hwa)

Comment 3

[Brendan Dahl [:bdahl]]

Looks to be a linux only issue.  WFM with osx and windows with FF23.

Comment 4

[Frédéric Buclin]

I can reproduce on Linux with Firefox 20 but not with Firefox 21b1. The same problem appears when viewing e.g. http://www.bugzilla.org/docs/4.2/en/pdf/Bugzilla-Guide.pdf. It looks like letters are top-aligned instead of being based on some baseline. Would be nice to see a 20.0.1 with this problem fixed. PDF are unreadable.

Comment 5

[Frédéric Buclin]

Attachment: another screenshot

Nice, isn't it?

Comment 6

[Dave Miller [:justdave]]

fwiw, this works fine for me on Firefox 20.0 on Ubuntu 12.10 64bit.  I'm using the Firefox packaged by Ubuntu.  Did Ubuntu fix it themselves and not port it upstream?

Comment 7

[Lukas Blakk [:lsblakk] use ?needinfo]

Not tracking since this looks like it affects a very small subset of users and might have a workaround depending on linux flavour and firefox package being used.

Comment 9

[Ralf Jung]

I am using the vanialla Firefox on Debian Testing amd64, and I am also affected by this. Unlike in the initial screenshot, even the header ("Preliminaries") is rendered incorrectly for me. Everything as all right with FF19.

> might have a workaround depending on linux flavour and firefox package being used.
Which workaround? I found none so far.

Comment 10

[Loic]

(In reply to Ralf Jung from comment #9)
> Everything as all right with FF19.


Could you use mozregression tool to find a possible regression range, please.
See http://harthur.github.io/mozregression/

FF19 nightlies started in October 2012.

Comment 11

[Frédéric Buclin]

works:

ftp://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2012/12/2012-12-29-03-09-19-mozilla-central/


fails:

ftp://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/2012/12/2012-12-30-03-08-30-mozilla-central/

Comment 12

[Masatoshi Kimura [:emk]]

Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=0bb4773db082&tochange=eb2f5c66561b
Bug 824174?

Comment 13

[Ralf Jung]

Did Frédéric provide all the information you need, or should I do a regression test as well? I won't have time today, but it should be possible during the weekend.

Comment 14

[Loic]

Regression range is OK, ty. ;)

Comment 15

[Olaf Flebbe]

Hi I have font rendering issues too, which looks very similar to this one.

I can confirm that FF 19 works and FF 20 has this kind of rendering issues.

Comment 16

[Olaf Flebbe]

(In reply to Olaf Flebbe from comment #15)
> Hi I have font rendering issues too, which looks very similar to this one.
> 
> I can confirm that FF 19 works and FF 20 has this kind of rendering issues.

Sorry for the noise, just discovered about FF 21. My issue is fixed with FF 21

Comment 17

[[:Aleksej]]

Assuming it's not distinguishable from bug 844570, marking this bug as duplicate of that.  The problem happens to me in Fx 20, but not 19.0.1 or 21.