Non-deterministic CSP script-injection errors

[Rudxain]

My dyn-rules for reference

There's 1 or more (built-in) filter-lists something that's breaking most sites. This happens because Content Security Policy is rejecting some inline script-srcs: easylist/easylistspanish#346

Debugging is hard because I can only repro with cache. If I force a clean reload, or re-open a site in a private/incognito tab, the problem disappears.

I'm suspecting it's AdGuard Spanish. I've disabled it to see if the problem persists this week

[stephenhawk8054]

You can open the logger before loading the sites and see which filters are being used on the sites.

[Rudxain]

Update: I still get the same problem without AG-Spanish. Accidental repro on ImgFlip.

The logger doesn't show anything about scriptlets

[Rudxain]

Could it be a redirect? So far the only sus thing I've found is

! uBlock filters – Privacy
||googletagmanager.com/gtag/js$script,redirect-rule=googletagmanager_gtm.js:5

Since I'm blocking all 3p-script by default, I thought that this filter would have no effect, but the logger seems to disagree

[stephenhawk8054]

Redirect will happen to blocked dynamic rules as well. You can turn off redirecting by

@@*$redirect-rule

You didn't say you are using dynamic rules. Please always include that in all reports, that's a big change. We can't read minds.

Reset uBO to default settings and test again.

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There's nothing else we can help if users are using Advanced user settings.

[Rudxain]

@@*$redirect-rule

I added that to my filters, reloaded (hot, not cold) a page in v6.mui.com/, and it seems to fix the issue. I remove the filter, reload (hot, not cold), and the issue is still fixed.

I'm starting to think that this a caching quirk of Firefox. I doubt someone could repro in Chromium (I hope I'm wrong).

You didn't say you are using dynamic rules. Please always include that in all reports, that's a big change. We can't read minds.

I'm sorry. I understand. And thank you for your time!

Reset uBO to default settings and test again.

I've created a new profile, but later I realized it might be better to recycle my daily profile to test the existing cache

[krystian3w]

Maybe regression: #3576

But then it would indicate that Firefox has fixed the bug partially.

[Rudxain]

Maybe also #3652 ? (I have scripts disabled by default)

Edit: now I see that both issues are linked