[Webkit-unassigned] [Bug 261149] New: Navigating away from a meta color-scheme dark page causes dark background color on target page

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261149

            Bug ID: 261149
           Summary: Navigating away from a meta color-scheme dark page
                    causes dark background color on target page
           Product: WebKit
           Version: Safari 16
          Hardware: Mac (Apple Silicon)
               URL: https://markusdosch.github.io/webkit-bug-meta-color-sc
                    heme-dark/
                OS: macOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mail at markusdosch.com

Scenario:

- Originating page A sets <meta name="color-scheme" content="dark" />
- Target page B does not set a color-scheme, and does not set a background-color

When navigating from A to B via a link, the expectation is: The background on B should be white.

Actual result: Target page has a dark background, making the text illegible.

The issue also occurs if the target page explicitly sets color-scheme to light. The issue did only occur when both pages were on the same domain, I could not reproduce it for cross-domain linking.

Demo: https://markusdosch.github.io/webkit-bug-meta-color-scheme-dark/

Chrome & Firefox behave as expected and always show the target page with a white background.

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