1659918 - Videos don't play on cbsnews.com with ETP - Strict enabled

Status: RESOLVED WORKSFORME

(Core :: Privacy: Anti-Tracking, defect, P3)

Description

[Oana Arbuzov [:oanaarbuzov]]

Attachment: StictVsStandard.png

Environment:
Browser / Version: Firefox Nightly 200818 (🦎 81.0a1-20200813092915)
Operating System: Huawei P20 Lite (Android 8.0.0) - 1080 x 2280 pixels, 19:9 ratio (~432 ppi density), Samsung Galaxy S6 Edge (Android 7.0) - 1440 x 2560 pixels (~577 ppi pixel density)

Steps to reproduce:

1. Navigate to https://www.cbsnews.com/#app
2. Tap to play the video.
3. Observe behavior.

Expected Behavior:
Video plays.

Actual Behavior:
Video doesn't play.

Notes:

1. Screenshot attached.
2. The issue is not reproducible with ETP - Standard enabled.

Comment 1

[Oana Arbuzov [:oanaarbuzov]]

The issue is still reproducible, with ETP - Strict video doesn't play.
https://prnt.sc/10119ul

Tested with:
Browser / Version: Firefox Nightly 210218 (🦎 87.0a1-20210218092411)
Operating System: Samsung Galaxy S8 (Android 9) - 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density)

Comment 2

[Thomas Wisniewski [:twisniewski]]

If I allow https://pubads.g.doubleclick.net/ssai/event/Sid4xiTQTkCT1SLu6rjUSQ/streams then the video plays for me, so we're stuck here as we are with bug 1661911. However, I just confirmed that even if we allow the requests, we'll have to do more than just replay that XMLHttpRequest, as it isn't sufficient to unblock the URLs and replay the request in the devtools.

Comment 3

[Thomas Wisniewski [:twisniewski]]

These videos are now working for me, thanks in part to a change in the way the site serves the videos and also due to SmartBlock shims.