1485962 - [Fastblock] Twitter videos blocked on wikia.com

Status: RESOLVED INCOMPLETE

(Firefox :: Protections UI, defect, P3)

Description

[David Olah]

Attachment: 2018-08-24_1525.png

[Affected versions]
63.0a1 (2018-08-22)

[Affected platforms]
Windows 10, Windows 7, Ubuntu 16.04, Mac OS X

[Steps to reproduce]
1. Open Firefox and in the Hamburger Menu, click on Content Blocking
2. about:preferences#privacy will be opened and Content Blocking section will be focused
3. Set Slow tracking element to "Always block"
4. Set Trackers to "Never block"
5. Go to about:config and set browser.fastblock.timeout to 2000 ms
6. Access: http://www.wikia.com/fandom

[Expected result]
Content on the page is shown

[Actual result]
Videos from Twitter are blocked. They cannot be played and a black background appears instead of the video. [Check attachment]