Is this a top-10K site?

I think so, since https://xn--80aa1boaj3b9g.com is shown as expected.

Thanks for the report. 

U+04CA (ӊ) was missed in  bug 793628  because it didn't look like capital H with a font (Symbola ) that happenen to render the character in 
https://goo.gl/orKdsQ for the following set. (the Unicode util page specifies a bunch of fonts and the first one covering U+04CA was 'symbola' with a rather unusual shape for U+04CA). 


[:IdentifierStatus=Allowed:] &  [:Ll:] &
  [[:sc=Cyrillic:] -
  [[\u01cd-\u01dc][\u1c80-\u1c8f][\u1e00-\u1e9b][\u1f00-\u1fff]
  [\ua640-\ua69f][\ua720-\ua7ff]]] &
[:NFD_Inert=Yes:]

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d52b8375cfe5b56194d3df09c18e7b64e5838369

commit d52b8375cfe5b56194d3df09c18e7b64e5838369
Author: Jungshik Shin <jshin@chromium.org>
Date: Wed Feb 21 18:40:39 2018

Add a few more entries to the confusables list for IDN

U+04CA (ӊ) => h
U+0E1F (ฟ) => w
U+0E23 (ร) => s

Bug: 813925,  813814 
Test: components_unittests --gtest_filter=*IDN*
Change-Id: If81ea9bf1c1729f1b6ffc71d718dc5950ac825b5
Reviewed-on: https://chromium-review.googlesource.com/927741
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538159}
[modify] https://crrev.com/d52b8375cfe5b56194d3df09c18e7b64e5838369/components/url_formatter/idn_spoof_checker.cc
[modify] https://crrev.com/d52b8375cfe5b56194d3df09c18e7b64e5838369/components/url_formatter/top_domains/test_domains.list
[modify] https://crrev.com/d52b8375cfe5b56194d3df09c18e7b64e5838369/components/url_formatter/top_domains/test_skeletons.gperf
[modify] https://crrev.com/d52b8375cfe5b56194d3df09c18e7b64e5838369/components/url_formatter/url_formatter_unittest.cc

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Thanks! $500 for this.

This bug requires manual review: Less than 28 days to go before AppStore submit on M66
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), josafat@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Please verify the fix in the latest canary

verified on canary 67.0.3375.0,  https://шӊатѕарр.comis is shown in punycode as expected. 

Deleted: Screen Shot 2018-03-19 at 17.01.08.png 33.8 KB

	Screen Shot 2018-03-19 at 17.01.08.png 33.8 KB View Download

The CL for this bug was landed on Feb 21 (a week before 66 branch). See comment 7. 

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot