Can't use zapper or custom filter tools on `whatsapp.com`

[MuhammadMotala]

Prerequisites

• This is NOT a YouTube, Facebook, Twitch or a shortener/hosting site report. These sites MUST be reported by clicking their respective links.
• I read and understand the policy about what is a valid filter issue.
• I verified that this issue is not a duplicate. (Use this button to find out.). Comment in the old issue threads even when they are closed or even if you have a different problem.
• I did not remove any of the default filter lists, or I have verified that the issue was not caused by removing any of the default lists.
• I did not enable additional filter lists, or I have verified that the issue still occurs without enabling additional filter lists.
• I have disabled the Developer mode in uBO Lite's settings and the issue still persists.
• I have verified that the issue still exists after using the Optimal or Complete filtering mode.
• I have verified that the web browser's built-in content blocker/tracking protection, network wide/DNS blocking, or my VPN is not causing the issue.
• I have turned off all other extensions and the issue still persists.
• If this is about a breakage or detection, I have verified that it is caused by uBO Lite and isn't a site or browser issue.
• I have verified that the browser I am using is up to date with no pending updates.
• I did not answer truthfully to ALL the above checkboxes.

URL address of the web page

https://web.whatsapp.com/

Category

nuisance

Description

Element zapper and create custom filter do not work on https://web.whatsapp.com/.

Browser name and version

Chrome Version 140.0.7339.208 (Official Build) (64-bit)

Other extensions used

None

Country

No response

Screenshot(s)

Screenshot(s)

Not possible due to privacy.

Configuration

name: uBlock Origin Lite
version: 2025.928.1920
browser: Chrome 140 (win)
filtering:
 site: complete
 default: complete
rulesets:
 ublock-filters
 easylist
 easyprivacy
 pgl
 ublock-badware
 urlhaus-full
 adguard-mobile
 block-lan
 dpollock-0
 adguard-spyware-url
 annoyances-cookies
 annoyances-overlays
 annoyances-social
 annoyances-widgets
 annoyances-others
 annoyances-notifications
 ublock-experimental
 stevenblack-hosts
 ubol-tests
 fra-0
console:
 [0929.2250]insertCSS/Error: Frame with ID 2483 was removed.
 [0930.1757]insertCSS/Error: Frame with ID 3230 was removed.
 [0930.1757]executeScript/Error: Frame with ID 3230 was removed.
 [0930.1757]insertCSS/Error: Frame with ID 3230 was removed.

[gorhill]

The site forbids embedding iframe in it:

Exception: SecurityError: Blocked a frame with origin "https://web.whatsapp.com" from accessing a cross-origin frame. at chrome-extension://ciokjnpbnekglcdehmlkojioejipaebj/js/scripting/tool-overlay.js:357:38 at new Promise (<anonymous>) at Object.install (chrome-extension://ciokjnpbnekglcdehmlkojioejipaebj/js/scripting/tool-overlay.js:312:16) at chrome-extension://ciokjnpbnekglcdehmlkojioejipaebj/js/scripting/zapper.js:131:19 at chrome-extension://ciokjnpbnekglcdehmlkojioejipaebj/js/scripting/zapper.js:135:3

Zapper and custom filter tools requires to embed an iframe in the site to handle their user interface.

[JohnnyFireOne]

@MuhammadMotala

hello may i ask if you this issue or similiar like me?

#518