Bug 202883

Summary: REGRESSION: Kannada Text Broken in Safari
Product: WebKit Reporter: P K <parthakr>
Component: TextAssignee: Nobody <webkit-unassigned>
Status: RESOLVED INVALID    
Severity: Critical CC: bfulgham, mmaxfield, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: All   
OS: macOS 10.15   
Attachments:
Description Flags
Comparing Chrome on left side and Safari on right side of the screen none

Description P K 2019-10-12 13:20:41 PDT 
Created attachment 380833 [details]
Comparing Chrome on left side and Safari on right side of the screen

u+0cb0 u+200c u+0ccd should avoid 

Example: ರ‌್ಯಾಕೆಟ್ 
In the below webpage
https://www.prajavani.net/article/ರ‌್ಯಾಕೆಟ್-ಹಿಡಿದವರ-ಫ್ಯಾಷನ್-ಆಟ

Chrome with Harfbuzz is drawing the correctly. Safari with Apple CoreText was drawing the text correctly until Mac OS Catalina.

Since the update of the Catalina, this sequence is broken.

In the attached screenshot, left side is chrome, right side is Safari.


This combination was drawing correctly in Mac OS Mojave and earlier. It has changed / failed to draw in Mac OS catalina.
Comment 1 Radar WebKit Bug Importer 2019-10-13 20:08:16 PDT 
<rdar://problem/56236695>
Comment 2 Brent Fulgham 2022-02-10 15:17:15 PST 
This turned out to be based on a misunderstanding. Upon review with Apple's CoreText team the two browsers were found to match.