Edge does misinterpred/mishandle CSS font-family

Won’t fix Issue #6803272


Mar 8, 2016
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Steps to reproduce


Repro Steps:


Visit  and take the tour. The https://portal.office.com/AdminPortal/Home#/homepagetitle has applied the following CSS syntax:

font-family: ‘Segoe UI semibold’ !important;

Or just create a quick draft and apply that CSS property to any text.

Expected Results:


As the CSS is INVALID the browser should fall back to the default browser font setting (Usually Times New Roman).

I back up my claim with the official W3C Syntax: https://www.w3.org/TR/css-fonts-3/

“A font family name only specifies a name given to a set of font faces, it does not specify an individual face. For example, given the availability of the fonts below, Futura would match but Futura Medium would not.”

Actual Results:


Dev Channel specific:




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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “Bogdan B.”

      Changed Steps to Reproduce

      Changed Assigned To from “Bogdan B.” to “IE S.”

      Changed Status to “Won’t fix”

    • Hello,

      Thank you for providing this information about the issue. At the current time, we do not plan to release a fix for this problem. We are considering a solution for a future build.

      Best Wishes,
      The MS Edge Team

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