Open Bug 1486756 Opened 3 years ago Updated 9 months ago

Layout is broken on while Tracking Protection Basic is enabled


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

62 Branch
Windows 10





(Reporter: oanaarbuzov, Unassigned)


(Blocks 1 open bug, )


(Whiteboard: [webcompat][tp-ads][tp-yellowlist-active][tp-storefront])

User Story


(4 files)

Attached image BrokenLayout.png
Browser / Version: Firefox Nightly 63.0a1 (2018-08-27)
Operating System: Windows 10 Pro

    1. Tracking Protection Basic enabled.
[Steps to Reproduce:]
    1. Navigate to 
    2. Observe the page.
[Expected Behavior:]
Layout is correctly displayed.
[Actual Behavior:]
Layout is broken (images, css).

Also reproducible after signing into the account and navigating to 
Added broken layout after sign in.
The issue is related to `trackingprotection` breakage.

Looking at the devtools console, here are the blocked resources:
The resource at “” was blocked because content blocking is enabled.
The resource at “” was blocked because content blocking is enabled.
The resource at “” was blocked because content blocking is enabled.

So below are the domains to test:

I opened the URL in a fresh browser profile (Firefox Nightly 63, uMatrix installed, normal mode) and loaded the page. The page layout is broken.

I disabled the Spoof Referrer option in uMatrix and then WHITELISTED:
- (including all related domains)
and layout is displayed correctly.

The other resource ( didn't help. 

So in conclusion:
- is in Advertising category = [tp-ads]
Attached image uMatrixResults.png
Added uMatrix results.
Added uMatrix results after login.
Blocks: 1486781
Blocks: 1486790
No longer blocks: 1486781, 1486790
See Also: → 1486781, 1486790
Product: Tech Evangelism → Web Compatibility

Migrating Webcompat whiteboard priorities to project flags. See bug 1547409.

Webcompat Priority: --- → ?

See bug 1547409. Migrating whiteboard priority tags to program flags.

Webcompat Priority: ? → ---

This is another instance of Digital River's CDN resources being blocked, similar to the situation discussed here:

Duplicate of this bug: 1486790
Whiteboard: [webcompat][tp-ads] → [webcompat][tp-ads][tp-yellowlist-active][tp-storefront]

The issue is no longer reproducible with ETP - Standard, the layout is displayed correctly.

Note: The issue still occurs with ETP - Strict.

Tested with:
Browser / Version: Firefox Nightly 86.0a1 (2021-01-18)
Operating System: Windows 10 Pro

Closed: 9 months ago
Resolution: --- → FIXED
Component: Desktop → Privacy: Anti-Tracking
Product: Web Compatibility → Core
Resolution: FIXED → ---
Version: Firefox 62 → 62 Branch
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