1490378 - Content blocking is blocking connection from extension background script

Status: RESOLVED DUPLICATE of bug 1308640

(Firefox :: Protections UI, defect)

Description

[afnankhan]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
Build ID: 20180910220142

Steps to reproduce:

1. Install Reddit Checker: https://addons.mozilla.org/en-US/firefox/addon/reddit-checker/
2. Open Browser Console
3. Load https://hacks.mozilla.org/2018/09/webxr/


Actual results:

Extension icon doesn't show the number of Reddit submissions in the badge.
In the Browser Console it says:
The resource at “https://www.reddit.com/api/info.json?url=https://hacks.mozilla.org/2018/09/webxr/” was blocked because content blocking is enabled and the resource was classified as a slow tracking resource.


Expected results:

The extension should show the number of Reddit submissions in the badge.

Comment 1

[Paul_B]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
Build ID: 20180914100156

Thank you for taking the time to report this issue. However, I was not able to reproduce the issue following STR above on Windows 10 with the latest Nightly 64.01a build (20180914100156). After I load the provided URL, the extension icon displays 4 submissions. Also, I do not see anything in the Browser Console that refers to content blocking. 

Could you please retest this using latest Nightly build (https://nightly.mozilla.org/) and report back the results? When doing this, please use a new clean Firefox profile, maybe even safe mode, to eliminate custom settings as a possible cause (https://goo.gl/PNe90E).

Comment 2

[Paul_B]

Attachment: Reddit.png

Comment 3

[afnankhan]

Attachment: Browser Console log

I can reproduce this using Nightly 64.0a1 (2018-09-14) using the following steps:

1. Created a new profile
2. Install add-on: https://addons.mozilla.org/en-US/firefox/addon/reddit-checker/
3. Visit https://hacks.mozilla.org/2018/09/webxr/

Comment 4

[François Marier [:francois]]

It seems like all that's missing is a host permission in the extension: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/permissions#Host_permissions