Courier New and monospace rendered incorrectly when bold




12 years ago
9 years ago


(Reporter: sixfoottallrabbit, Unassigned)


2.0 Branch
Windows XP

Firefox Tracking Flags

(Not tracked)


(Whiteboard: [CLOSEME 5-15-2010])


(1 attachment)



12 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20070309 Firefox/
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20070309 Firefox/

Although the Courier new and monospace fonts are supposed to be monospaced, when you bold some text, the line-height is increased by 1px, therefore disrupting any monospacing.

Reproducible: Always

Steps to Reproduce:
1. Create a page with a passage of text in Courier New or monospace fonts
(Set the line-height too, if you want; the problem still occurs)
2. Highlight a couple of words on one of the lines with either a <b> or <strong> tag
3. When viewing the page, highlight the text and notice the increase of line-height where the bolded text is.
Actual Results:  
The line-height becomes 1px more than it should be.

Expected Results:  
The line-height should be the same as the rest of the text.
Created attachment 263228 [details]
Testcase from comment 0?

Is this testcase what you mean? If so, I don't see any problem using Firefox on Windows XP SP2 or Mac OS X.
also wfm on Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv: Gecko/2007042503 BonEcho/


11 years ago
Summary: Courier New and monospace rendered incorrectly → Courier New and monospace rendered incorrectly when bold
This bug was reported on Firefox 2.x or older, which is no longer supported and will not be receiving any more updates. I strongly suggest that you update to Firefox 3.6.3 or later, update your plugins (flash, adobe, etc.), and retest in a new profile. If you still see the issue with the updated Firefox, please post here. Otherwise, please close as RESOLVED > WORKSFORME
Whiteboard: [CLOSEME 5-15-2010]
Version: unspecified → 2.0 Branch
No reply, INCOMPLETE. Please retest with Firefox 3.6.x or later and a new profile ( If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.
Last Resolved: 9 years ago
Resolution: --- → INCOMPLETE
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