1710569 - Video from the carousel doesn't play on branding.emonks.nl with ETP - Strict enabled

Status: RESOLVED MOVED

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

Description

[Oana Arbuzov [:oanaarbuzov]]

Attachment: VideoBroken.gif

Environment:
Browser / Version: Firefox Nightly 90.0a1 (🦎 90.0a1-20210510093555)
Operating System: Samsung Galaxy S8 (Android 9) - 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density), Google Pixel 5 (Android 11) - 1080 x 2340 pixels, 19.5:9 ratio (~432 ppi density)

Prerequisites:
ETP - Strict enabled.

Steps to reproduce:

1. Navigate to https://branding.emonks.nl/portfolio/allround/nijland/
2. Scroll down the page to the carousel.
3. Observe the first elements.

Expected Behavior:
The video plays.

Actual Behavior:
The video doesn't play.

Notes:

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

Comment 1

[Thomas Wisniewski [:twisniewski]]

The video/animation is working for me on a fresh Firefox profile in strict mode or private browsing, but for some reason on my main profile the Google Maps API and Vimeo Player are being blocked on (with no adblockers active):

The resource at “https://player.vimeo.com/api/player.js?ver=3.3.5” was blocked because content blocking is enabled.
The resource at “https://maps.googleapis.com/maps/api/js?v=quarterly&language=nl&key=AIzaSyA5zbwgGuks6bfEr_2b3kfuKZzUoP5M3Ak&libraries=geometry%2Cplaces%2Cvisualization&ver=5.7.1” was blocked because content blocking is enabled.
The resource at “https://player.vimeo.com/video/525440214?background=1&autoplay=1&loop=1&byline=0&title=0” was blocked because content blocking is enabled.
The resource at “https://player.vimeo.com/api/player.js?ver=3.3.5” was blocked because content blocking is enabled.
The resource at “https://maps.googleapis.com/maps/api/js?v=quarterly&language=nl&key=AIzaSyA5zbwgGuks6bfEr_2b3kfuKZzUoP5M3Ak&libraries=geometry%2Cplaces%2Cvisualization&ver=5.7.1” was blocked because content blocking is enabled.

Which is very confusing to me, since both profiles are running the same instance of today's Firefox Nightly build.

@Arthur, maybe you might have a clue on what might cause such a discrepancy?

Comment 2

[Thomas Wisniewski [:twisniewski]]

Hmm, actually, it turns out that I had a non-default value in my about:config setting for urlclassifier.trackingTable:
I had: test-track-simple,base-track-digest256,content-track-digest256
And the default value on a fresh build of mozilla-central is: moztest-track-simple,ads-track-digest256,social-track-digest256,analytics-track-digest256

@Oana, do you also have a non-default value for that setting? If so, does changing to the default allow the animation to play?

Comment 3

[Oana Arbuzov [:oanaarbuzov]]

Attachment: BrokenAnimation.gif

Tom it seems that something broke and now the animation does not play at all regardless of the ETP (Strict/Standard/disabled), with the default setting https://prnt.sc/1330jq7.

This is a webcompat issue after all and not a tracking protection one.
I'll move it back.