IOS Safari: DNR rule not triggered in Private mode

[julKali]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality by using the chat icon in the popup panel.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• This is not a support issue or a question. For support, questions, or help, visit /r/uBlockOrigin.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO Lite in the browser.

I tried to reproduce the issue when...

• uBO Lite is the only extension.
• using a new, unmodified browser profile.

Description

I am a Testflight user of your extension and all in all it works great!

However, in order to fight my procrastination, I wanted to use UBOL to completely block entire pages.

I added the following DNR rule:

---
action:
  type: block
condition:
  urlFilter: *abc.com*
  resourceTypes:
    - main_frame
---

and in the normal profile it works great - the page is not loaded when accessed.

However, this filter doesn't seem to be working at all in Private mode. Naturally, I double-checked that UBOL is allowed in Private mode and it is; I can also see it among the extensions in a private tab. Alas, I can access abc.com freely. Is this some sort of known limitation?

A specific URL where the issue occurs.

https://abc.com

Steps to Reproduce

1. Activate developer functions
2. Add the script as written above
3. Open https://abc.com in a new Private tab

Expected behavior

It won't load

Actual behavior

It loads

uBO Lite version

Version: 2025.624.1458 (1022.1458)

Browser name and version

Safari

Operating system and version

iOS 18.5 (22F76)

[gorhill]

I tried to reproduce on iPadOS and I could not reproduce, the page was blocked with "Safari can't open the page. The error was: 'The URL was blocked by a content blocker'."

[julKali]

It also happens on my iPad ... IOS version 18.5 is up to date.