1698022 - Page returns error message at redditmetis.com when performing an user search query with ETP Standard in Private Browsing Mode

Status: NEW

(Web Compatibility :: Privacy: Site Reports, defect, P3)

Description

[Raul Bucata]

Attachment: Screenshot_14.jpg

Workaround:
Environment:
Operating system: Android 10
Firefox version: :Firefox Nightly 210310 (88.0a1-20210302034602)

Preconditions:
ETP set to STRICT

Steps to reproduce:

1. Navigate to:https://redditmetis.com/user/GallowBoob
2. Observe the result

Expected Behavior:
The user details are loaded

Actual Behavior:
The page returns an error message

Notes:

• Not reproducible with ETP set to STANDARD.

Comment 1

[Karl Dubost💡 :karlcow]

Needs Triage.

Comment 2

[Raul Bucata]

This was moved to the correct Core Product and Component

Notes:
The issue is still reproducible on the latest build of Firefox Nightly

Comment 3

[Negritas Sergiu, Desktop QA]

Hello! This issue is still reproducible with firefox 139.0a1(2025-04-11) on Windows 10 and Ubuntu 22.04.

Comment 4

[Raul Bucata]

With Standard ETP in Private Browsing Mode based on the new testing flow, the issue does not reproduce in Android, only in Desktop.

Tested with:

Browser / Version: Firefox Nightly 140.0a1 (2016093159-🦎140.0a1-20250526095203🦎)
Browser / Version: Firefox Nightly 141.0a1 (2025-05-27)
Operating System: Windows 10
Operating System: Google Pixel 3 (Android 12) -1080 x 2160 pixels, 18:9 ratio (~443 ppi density)
Operating System: Oppo Find X5 (Android 13) - 1080 x 2400 pixels, 20:9 ratio (~402 ppi density)