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Microsoft released a new build of its chromium-based Microsoft Edge browser to the Edge Insiders in the Dev channel. The new Microsoft Edge build 86.0.608.2 brings support for Dark Theme in default webpage form controls, reliability improvements, and a lot of fixes.


As it's a Dev Channel build, there are some known and unknown bugs. For a complete changelog of added features, reliability improvements, and bug fixes, continue reading further.


Latest Microsoft Edge Dev update improves Dark Theme in default webpage form controls, and lots of fixes (change log)


Added features:

  • Added support for Dark Theme in default webpage form controls like dropdowns, calendars, etc.
  • Added a management policy for Kiosk Delete Downloads On Exit. Note that this policy only applies to when the browser is in Kiosk Mode, and administrative templates will be updated later.
  • Enabled support for the Chromium management policy for a User Data Snapshot Retention Limit.

Improved reliability:

  • Fixed a crash when closing a window.
  • Fixed a crash on browser shutdown.
  • Fixed a crash when opening DirectInvoke programs.
  • Fixed a crash when switching browser profiles.
  • Fixed a crash when using Guided Switch to switch browser profiles.
  • Fixed an issue where opening a PWA or installed website sometimes crashes the browser.
  • Fixed a crash when closing the browser on versions of Windows older than Windows 10.
  • Fixed an issue where some websites don't load properly when Quiet Notifications are enabled. Note that this change restores regular notifications for affected sites.
  • Fixed an issue where videos sometimes stop playing right after they start.
  • Fixed an issue where creating a new Collection sometimes fails.

Changed behavior:

  • Fixed an issue where profile dialogs like for Guided Switch or Sign In sometimes don't appear.
  • Changed favorites links on the Favorites management page to open in a new tab instead of the current one.
  • Fixed an issue on Windows Insider builds where Edge tabs don't appear in the Alt + TAB list even when the Windows setting is enabled.
  • Fixed an issue where suggestions that appear for URLs to visit when the typed URL doesn't exist weren't working.
  • Fixed an issue where some parts of the Website Information popup are missing.
  • Fixed an issue where the fullscreen Shy UI sometimes doesn't respond to input.
  • Fixed an issue where the Shy UI window control buttons (minimize, close, etc.) don't respond to touchscreen presses or show hover state when the mouse hovers over them.
  • Fixed an issue where going through the Collections First Run Experience creates an extra Collection.
  • Fixed an issue where saving PDFs that are embedded in webpages sometimes results in the file being saved as an HTML file instead of a PDF.
  • Fixed an issue where MsEdgeDriver fails to launch Edge when running inside a Windows docker container.



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