571711 - many HTML character entities appear as "black boxes"

Status: UNCONFIRMED

(Firefox :: General, defect)

Description

[k.briggs]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)

Many HTML character entities appear as "black boxes" rather than having the characters substituted . The following appear as "black boxes" :  
— 
« 
» 

Reproducible: Always

Comment 1

[Ria Klaassen (not reading all bugmail)]

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.6pre) Gecko/20100607 Namoroka/3.6.6pre

This works fine for me. Do you see the same in safe-mode / with a new profile?
http://support.mozilla.com/en-US/kb/Safe+Mode
http://support.mozilla.com/en-US/kb/Basic+Troubleshooting#Make_a_new_profile

Comment 2

[k.briggs]

In "safe mode" and "regular mode" I get the same results. 

I have not attempted creating a new profile at this time. I will try attempt that next. 

I prefer to use Firefox because of the built-in MathML support.

Comment 3

[k.briggs]

Creating a new profile shows the — HTML character entity ; uncertain about the rest. I do not understand why a new profile will correct the problem I was having. 

I suggest that this item needs no more effort to resolve.