"Could not filter properly at browser launch. Reload the page to ensure proper filtering."

[troilus]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• 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 in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

1. ublock dispalys "Could not filter properly at browser launch. Reload the page to ensure proper filtering." on mutiple PC.
2. Dashboard page is pure white.

Edge version 129.0.2792.10 dev (64 )

Unable to resove after tried:

1. Using a new profile in private mode
2. Reinstall ublock in edge store(1.59.0) and chrome store(1.59.0).
3. Using uBlock0_1.59.1b8.chromium

A specific URL where the issue occurs.

Every website include about:blank

Steps to Reproduce

1. launch edge
2. Install ublock in Edge or Chrome store or import unzipd file

Expected behavior

ublock launch correctly

Actual behavior

ublock dispalys "Could not filter properly at browser launch. Reload the page to ensure proper filtering."

uBO version

1.59.0

Browser name and version

Edge 129.0.2792.10 dev (64 )

Operating System and version

Windows 10 19045.4780

[uBlock-user]

https://github.com/uBlockOrigin/uBlock-issues/wiki/Dashboard%3A-Filter-lists#suspend-network-activity-until-all-filter-lists-are-loaded

[garry-ut99]

Also: https://github.com/gorhill/uBlock/wiki/Toolbar-icon

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1

• (troilus): I performed a cursory search of the issue tracker to avoid opening a duplicate issue.

Even the first result from a cursory search of issue tracker LINK, returns the same issue:

• "Cannot filter correctly when launching the browser."  #3294

(and also there are many other duplicate issues, same as your, all of them are dupes of gorhill/uBlock#1327)

2

• (troilus): I checked the documentation to understand that the issue I am reporting is not normal behavior.

The documentation contains 3 different subpages about your issue, yet you still "overlooked" all of them.

3

troilus : 2. Dashboard page is pure white.

Already mentioned in documentation:

https://github.com/gorhill/uBlock/wiki/Toolbar-icon: (...) uBO's dashboard might be blank / white / inaccessible during that time.

[shism2]

I am having the same problem.

[iam-py-test]

@shism2 this is not a bug; this indicates uBlock Origin is not yet fully loaded. uBlock Origin needs time to load it's filterlists, and Chromium browsers do not wait for it to be ready before loading websites. This can allow advertisements and trackers to be loaded before uBlock Origin is ready to block them. Thus, a warning is shown, and there is a setting to prevent websites from loading before it is ready.
Thanks

[baccccccc]

it looks like something has changed recently because this warning message is now persistent across all of my newly installed devices. (Somehow it does not impact previously installed devices.) It does not matter how long I wait (hours and days), UBO never finishes loading, and the warning message remains. Reloading the page does not help, and the settings page won't load either (so I cannot opt in to "Suspend network activity until all filter lists are loaded").