So, you have two options if you want Edge to use dark mode completely. One way to resolve this is to also enable a dark theme ...

Don't let a bright screen mess with your eyes. Here's how to enable dark mode in Chrome, Firefox, Safari, and Edge.

Turn on Dark Mode in Edge Microsoft's Edge may be based on Google's Chromium browser, but it has offered far more theme options than Chrome. Open the three-dot menu in Edge and head to Settings ...

Microsoft Edge Canary's menu is no longer bloated. This change is not documented anywhere, but it's worth highlighting.

If you prefer to use dark themes on your PC, you may have recently noticed screen flashes when opening new windows in Chrome or Edge. It’s been happening on both Windows 10 and Windows 11 systems.