1264281 - Mathjax not working

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[john.michael.hall]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160407164938

Steps to reproduce:

I created a new tab and went to 
http://stats.stackexchange.com/questions/94886/what-is-the-relationship-between-the-gini-score-and-the-log-likelihood-ratio/95459



Actual results:

mathjax does not display on that site. Moreover, mathjax does not appear in any other stackexchange site that I went to afterward.

When I go to the console, this is the result:
The resource at "https://www.google-analytics.com/analytics.js" was blocked because tracking protection is enabled.[Learn More] 95459
The resource at "http://edge.quantserve.com/quant.js" was blocked because tracking protection is enabled.[Learn More] 95459
The resource at "http://b.scorecardresearch.com/beacon.js" was blocked because tracking protection is enabled.[Learn More] 95459
no element found 57d8:1:1
This site makes use of a SHA-1 Certificate; it's recommended you use certificates with signature algorithms that use hash functions stronger than SHA-1.[Learn More] qa.sockets.stackexchange.com
Use of getPreventDefault() is deprecated.  Use defaultPrevented instead. jquery.min.js:3:659

When I looked up what tracking protection is, it says that it is only enabled for private tabs. However, I did not open a private tab.


Expected results:

Was expecting mathjax to work and not stop working on other sites.

Comment 1

[Loic]

Attachment: Capture d'écran 2016-04-13 à 17.53.57.png

Could you attach a screenshot on your side, please.

Mine seems to be fine.

Comment 2

[john.michael.hall]

Attachment: screenshot.png

Comment 3

[john.michael.hall]

Added screenshot.png.

I don't know what the flags mean. First time I submitted a bug. 

Note: I'm pretty sure this is only affecting my work computer. I don't think I have the issue at home.

Comment 4

[Loic]

On your screenshot, there is a shield in the location bar, so that means tracking protection is enabled.

Type about:config and search for the string "privacy.trackingprotection.enabled". What's its value?
If it's true, switch to its default value false and force a refresh of the webpage.

Is it better now?

Comment 5

[john.michael.hall]

Totally working now. Thanks. 

Any idea how it would have gotten turned on? I don't remember that being a default before.

Comment 6

[Loic]

Maybe you tested this feature in the past.

Comment 7

[john.michael.hall]

I don't recall testing it. However, when I run Firefox in safe mode, then the shield doesn't shows up on other sites. This suggests it is an add-on, right? I don't think it's AdblockPlus. Maybe RefControl?

I used to be able to view the disqus comments from the work computer, but for at least the past few months I haven't. These sites also had the shield and I was hoping that unchecking the shield would fix it, but it didn't. I tried opening it in safe mode and the disqus comments still don't load. So it seems to be a separate issue.

Comment 8

[Loic]

Safe mode disables many features in Firefox, not just add-ons.

Comment 9

[Kohei Yoshino [:kohei]]

Related? https://www.fxsitecompat.com/en-CA/docs/2015/mathml-default-font-has-been-changed/

Comment 10

[Frédéric Wang Nélar]

I don't think it's related to native MathML. IIUC, it's just that MathJax is blocked when trackingprotection is enabled.

Comment 11

[Loic]

The funny thing is I'm not able to reproduce the blocking after enabling TP.

Comment 12

[john.michael.hall]

Based on what you said, I realized it must be an about:config setting I changed at one point or another. When I disabled it in there, then the issue went away.

I'm not sure why you weren't able to reproduce it after enabling it though.