505338 - text-shadow rendering is about 0.5 pixels away from where it should be in the x-direction on some characters

Status: UNCONFIRMED

(Core :: CSS Parsing and Computation, defect)

Description

[Daniel Premo]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1

This bug varies based on text-align.  It also appears to occur only in Firefox 3.5 on Mac OS X.  (I tested other browsers in OS X, and Firefox 3.5 and other browsers in Windows Vista.)  I put together the example URL to show what I'm talking about -- Each line consists of 14 uppercase letter "W"s.  The first line is text-align left, the second line is text-align center.  

On the first line, characters 1 through 5 are correct, then 6 through 9 are incorrect.  Chracters 10 through 13 are incorrect, then 14 is correct.  

On the second line, characters 1 through 3 are correct, characters 4 through 7 are incorrect, characters 8 through 12 are correct, and chracters 13 and 14 are incorrect.  

Reproducible: Always

Steps to Reproduce:
1.  Load the URL provided in Firefox 3.5 for Mac OS X.  
2.  Load the same URL in (any?) other browser.  
3.  I'm not sure how prevalent this is in terms of font-family, font-size, container element, but the example above loaded in Firefox 3.5 on Mac OS X produces the error 100% of the time, while all other browsers I've tested do not.  
Actual Results:  
The text-shadow appears to be off by about one-half pixel in the x-direction, but only on some of the text.  

Expected Results:  
The text should render consistently and more in line with other browsers.

Comment 1

[Matthias Versen [:Matti]]

moving to style system but could be Thebes, i can only guess