426844 - fonts rendered incorrectly

Status: UNCONFIRMED

(Core :: Layout: Text and Fonts, defect)

Description

[Vasili Sviridov]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b5) Gecko/2008032620 Firefox/3.0b5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b5) Gecko/2008032620 Firefox/3.0b5

inter-character spacing is invalid

Reproducible: Always

Steps to Reproduce:
Visited a page
Actual Results:  
Certain pieces of text are garbled, letters are positioned too close or even overlapping each other in some cases, or too far in other cases.

Expected Results:  
Good readability

Comment 1

[Vasili Sviridov]

Attachment: screenshot of the broken font

Comment 2

[Vasili Sviridov]

Attachment: portion of the underlying html that produces the rendering

Comment 3

[Jesse Ruderman]

Does loading https://bugzilla.mozilla.org/attachment.cgi?id=313411 trigger the bug for you?  (If not, you haven't included enough of the HTML+CSS.)

Comment 4

[Vasili Sviridov]

Attachment: Working test case

Added a working test case. Notice that link w/o "font-weight: bold" is rendered correctly character-spacing wise...

Comment 5

[Vasili Sviridov]

'tis but bizarre, but after a few restarts back and forth between FF2 and FF3b5 I can no longer reproduce the problem. Everything renders fine.

Comment 6

[Jesse Ruderman]

If you get into the buggy state again, please try to figure out which file in your Firefox profile is responsible for the difference between working correctly and not working correctly.  Maybe we'll be able to figure out a complete set of steps to reproduce based on that (and also determine whether it's a bug in Firefox, guess how many users it affects, etc).

Comment 7

[Vasili Sviridov]

Actually there's only one profile, shared between both 2 and 3b5. And the bug has reappeared again with this testcase.

Comment 8

[Jesse Ruderman]

Ok.  Please create a new profile (but don't delete your old one), and see whether the bug exists there.  If not, try to figure out which file in your old profile is responsible for the difference (e.g. by copying files from your old profile to your new profile one at a time).

Comment 9

[Vasili Sviridov]

Ok, apparently the problem does not manifest itself with vanilla profile for both 2 and 3b5 (separate profiles for each instance). Guess that was a weird rare case that's hard to track.

Comment 10

[WADA:World Anti-bad-Duping Agency]

> Gecko/2008032620 Firefox/3.0b5
> <font size="2" face="MS Sans Serif">

MS Sans Serif : SSERIFE.FON  MS Sans Serif font 8,10,12,14,18,24 (VGA)
Looks to be DUP of Bug 425336 which is problem after patch for Bug 424018.
See also Bug 426927.