Color-scheme break element picker (dark dense fog)

[krystian3w]

Prerequisites

• I verified that this is not a filter issue (MUST be reported at filter issue tracker)
• This is not a support issue or a question
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
• The issue is not present after wholly disabling uBlock Origin ("uBO") in the browser
• I checked the documentation to understand that the issue I report is not a normal behavior

I tried to reproduce the issue when...

• uBO is the only extension
• uBO with default lists/settings
• using a new, unmodified browser profile

Description

New css color-scheme:dark (gorhill/uBlock@b4774c4 / https://github.com/gorhill/uBlock/blob/35866be22464d284e5bbaa553d6449bf144c5245/src/css/themes/default.css#L301-L302) for :root.dark element break embeded iframe on Chromium.

https://user-images.githubusercontent.com/35370833/159540378-8fc85abf-7e71-42fd-8b7c-65ae6b6e3950.png

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• I performed a cursory search of the issue tracker to avoid opening a duplicate issue *

Maybe reported directly in chromium bug tracker - no checked too github discussions or oldie topic about dark theme to found this glitch (only 40 issues who are open or closed in that year).

Maybe guilty is Intel driver for integrated graphic card.

Then leave open for only other lazy users.

A specific URL where the issue occurs

example.org

Steps to Reproduce

1. use lastest dev uBO in Chromium Browser
2. try enable dark mode
3. try block something with element picker
4. page now will dark with rare red square/rectange

Expected behavior

Possible view page without dark fog

Actual behavior

Dark fog due chromium enforce dark background for html in element.

uBlock Origin version

1.41.9b3

Browser name and version

Chrome 99 / Edge 99

Operating System and version

Windows 7 and Windows 10

no have GNU/Linux, macOS or Windows 11 (or legacy Windows 8 / 8.1) to more vide test