1835826 - Image slider stuck loading on cinemaxx.de in Private mode with Standard ETP

Status: NEW

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

Description

[Calin Tanase]

Attachment: cinemaxx de (private mode).mp4

Environment:
Operating system: Google Pixel 5 (Android 13)
Firefox version: Nightly 115.0a1-20230529093707

Preconditions:
• Private window opened
• ETP set to Standard
• Clean profile

Steps to reproduce:

1. Go to https://www.cinemaxx.de
2. Observe the behaviour.

Expected Behaviour:
The image slider loads correctly.

Actual Behaviour:
The image slider is stuck in a loading animation.

Notes:

1. Screen rec provided
2. Not reproducible in Normal regardless of the ETP status
3. Not reproducible in Private with Strict or with ETP turned OFF
4. Same behaviour on Firefox Release

Comment 1

[Denis Müller [:Webworkr]]

This bug is based on https://github.com/webcompat/web-bugs/issues/122772, opened by me.

Comment 2

[Tim Huang[:timhuang]]

We couldn't reproduce this issue.

Calin, would you be able to provide the about:support info for us to analyze the issue? And maybe verify the issue again. Thanks.

Comment 3

[Calin Tanase]

Attachment: Troubleshooting Info (Android 13).txt

I've tested once again and it is still reproducible for me in Private with Standard ETP.

Tested on:
Operating system: Google Pixel 5 (Android 13) - 1080 x 2340 pixels, 19.5:9 ratio (~432 ppi density)
Browser/Version: Firefox Nightly 116.0a1-20230606040644

Comment 4

[Harshit Sohaney [:hsohaney]]

Able to reproduce partially,

1. ETP Strict on:
   Works as expected, but no image slider above the Cinemaxx logo. Everything else loads just fine.
   Note: Page starts from Cinemaxx logo and navigation bar, instead of the image as shown in STR.
2. ETP Standard on:
   Main image does not load and stays on the loading screen as shown in the STR video. Additionally, some images of the movie posters do not load.
3. ETP Strict/Standard, turned off through protections panel:
   Image and slider are stuck loading as shown in STR video. Additionally, some images of the movie posters do not load.

Device

• Samsung Galaxy S21+ 5G
• Android 13, One UI 5.1
• Firefox Nightly 116.0a1

Comment 5

[Harshit Sohaney [:hsohaney]]

Update: able to reproduce. Cannot test further until the team gets an android phone to debug on.