RESOLVED DUPLICATE of bug 316235316186
Regression: Thai text is truncated when center- or right-aligned on iOS 26.5 / 26.6 beta in Canvas rendering 
https://bugs.webkit.org/show_bug.cgi?id=316186
Summary Regression: Thai text is truncated when center- or right-aligned on iOS 26.5 ...
kane3446
Reported 2026-06-02 23:52:23 PDT
Created attachment 479965 [details] screenshots from iOS 26.3 (OK) and iOS 26.5 (truncated). Thai text aligned right or center is displayed incompletely on iOS 26.5 and iOS 26.6 Beta. When aligned left, the text displays normally on iOS 26.5. The issue does not occur on iOS 18,iOS26.3, Android devices, or PCs. Test page: https://stevenchou0323.github.io/ Attachment: screenshots from iOS 26.3 (OK) and iOS 26.5 (truncated).
Attachments
screenshots from iOS 26.3 (OK) and iOS 26.5 (truncated). (487.14 KB, patch)
2026-06-02 23:52 PDT, kane3446 		no flags
DetailsFormatted DiffDiff
screenshots from iOS 26.3 (OK) (138.56 KB, image/png)
2026-06-03 00:00 PDT, kane3446 		no flags
Details
screenshots from iOS 26.5 (truncated). (160.14 KB, image/png)
2026-06-03 00:00 PDT, kane3446 		no flags
Details
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
kane3446
Comment 1 2026-06-03 00:00:06 PDT
Created attachment 479966 [details] screenshots from iOS 26.3 (OK)
kane3446
Comment 2 2026-06-03 00:00:50 PDT
Created attachment 479967 [details] screenshots from iOS 26.5 (truncated).
kane3446
Comment 3 2026-06-03 00:12:44 PDT
Comment on attachment 479965 [details] screenshots from iOS 26.3 (OK) and iOS 26.5 (truncated). obsolete attachment
Radar WebKit Bug Importer
Comment 4 2026-06-03 06:37:11 PDT
<rdar://problem/178622405>
Ahmad Saleem
Comment 5 2026-06-03 06:39:16 PDT
Pull request: https://github.com/WebKit/WebKit/pull/66366
Ahmad Saleem
Comment 6 2026-06-03 19:47:13 PDT
*** This bug has been marked as a duplicate of bug 316235 ***
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