Able to reproduce the issue on the latest canary(57.0.2926.0) and the latest stable(54.0.2840.99) on Windows-10. Worked on fine on Mac OS 10.11.6 and Linux Ubuntu 14.04.

Regressed in M-46.

Last good build: 46.0.2486.0(showed Microsoft JhengHei—6 glyphs as "Rendered Fonts")
First bad build: 46.0.2487.3(showed 微軟正黑體—Local file(6 glyphs) as "Rendered Fonts")

Changelog:
==========
https://chromium.googlesource.com/chromium/src/+log/8df9334cf8636bbef6bbeefa9f8f0ebc0894fda8..750c4625ab1bb4d3e94a5a3beb47fd59e94dc74e

eae@: Could this be related to https://codereview.chromium.org/1293323002

lushnikov@, would you be up for taking a look? I've seen fonts that had weirdly "double UTF-8 encoded" font names. https://github.com/fonttools/fonttools might help debugging this.

Friendly ping to get an update on this.

Still happening.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5c23fe6e90705997009f51b354eb7611b2e5e4ba

commit 5c23fe6e90705997009f51b354eb7611b2e5e4ba
Author: Emil A Eklund <eae@chromium.org>
Date: Tue Dec 05 02:04:12 2017

Parse font family names as UTF-8 instead of latin-1

Change FontPlatformData::FontFamilyName to parse the font family name as
UTF-8 instead of latin-1 as that is the encoding of the localized family
name provided by the API. Verified on Linux, Windows 7/10, and Mac OS X.

No test as I was unable to find a font with a localized non-latin family
name under a suitable license.

Bug:  667154 
Change-Id: Iddb7932b68681824062cc2a7bf163459fc356cbb
Reviewed-on: https://chromium-review.googlesource.com/807527
Reviewed-by: Stefan Zager <szager@chromium.org>
Commit-Queue: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521588}
[modify] https://crrev.com/5c23fe6e90705997009f51b354eb7611b2e5e4ba/third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp

Source Han Sans (Adobe's Noto CJK release) comes with localized names and is released under SIL OFL. But given its size it's really best to strip most of the glyph data from it and make a dummy version for testing.

Thanks for the report and for the suggested font for a test!
Sorry about taking this long to fix the bug.

Tested this issue on Windows 7 using the latest Canary 65.0.3286.0 by followin the below steps.

1. Launched Chrome and navigated to https://www.ubuntu-tw.org/
2. Opened Devtools and navigated to Elements -> Computed and in that can see the Font-Family as 'Times New Roman".

Attached is the screen cast for reference.

eae@ Can you please check the screen cast and verify if the fix is working as intended or please update the thread if we have missed anything from our end while testing.

Thanks...

Deleted: 667154.webm 6.3 MB

	667154.webm 6.3 MB View Download

susanjuniab: You're looking in the wrong place I'm afraid, check the "Rendered Fonts" section at the very bottom of the computed style tab.