Bug 172351 - Glyphs substituted by "locl" table are unintentionally shaped upright in vertical writing mode.
Summary: Glyphs substituted by "locl" table are unintentionally shaped upright in vert...
Alias: None
Product: WebKit
Classification: Unclassified
Component: Text (show other bugs)
Version: WebKit Nightly Build
Hardware: Mac macOS 10.12
: P2 Normal
Assignee: Nobody
Keywords: InRadar
Depends on:
Reported: 2017-05-19 03:07 PDT by Takao Baba
Modified: 2022-02-12 18:59 PST (History)
3 users (show)

See Also:

Screenshot of Safari and Chrome (for comparison) (31.51 KB, image/png)
2017-05-19 03:07 PDT, Takao Baba
no flags Details

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Description Takao Baba 2017-05-19 03:07:26 PDT
Created attachment 310642 [details]
Screenshot of Safari and Chrome (for comparison)

In the following example, all characters should be rendered sideways because all of them have "R" property of UTR#50.


However, the numbers (123) in the second line are rendered upright on Safari.

The problem occurs with Source Han Serif, but does not occur with Source Han Sans.

I found that the issue won't occur without "latin_special" lookup substitutions defined by:
Comment 1 Radar WebKit Bug Importer 2017-05-21 16:58:57 PDT
Comment 2 Myles C. Maxfield 2018-09-11 18:14:37 PDT
It looks like this is fixed now. Can you check again?
Comment 3 Takao Baba 2018-09-13 20:29:01 PDT
Safari 11.1.2 (13605.3.8) looks good. Thanks.
Comment 4 Brent Fulgham 2022-02-12 18:59:57 PST
This should now be fixed in shipping software.