Bug 311107

Summary:

REGRESSION (? - Safari 26.4): Spans stacking incorrectly - acting as block level rather than inline

Product:

WebKit

Reporter:

david

Component:

Layout and Rendering

Assignee:

alan <zalan>

Status:

RESOLVED FIXED

Severity:

Minor

CC:

ahmad.saleem792, bfulgham, koivisto, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

Safari 26

Hardware:

Mac (Apple Silicon)

OS:

macOS 26

See Also:

https://github.com/web-platform-tests/wpt/pull/60132

Attachments:

Description	Flags
Example of layout bug	none
Test reduction	none
Patch	none
[fast-cq]Patch	none

david

Reported 2026-03-30 07:40:16 PDT

Created attachment 478846 [details] Example of layout bug https://theradavist.com Under each article, on the lower right corner, there's an svg graphic of a small voice balloon, with the number of comments of each article inside. In other browsers (Firefox, Chrome), and in previous versions of Safari, this displayed correctly - the text was nested inside the svg. Now, as of MacOS 26.4 Safari, these elements are stacked vertically on the page.

Attachments
Example of layout bug (218.30 KB, image/png) 2026-03-30 07:40 PDT, david	no flags	Details
Test reduction (233 bytes, text/html) 2026-03-30 16:49 PDT, alan	no flags	Details
Patch (7.40 KB, patch) 2026-03-30 19:28 PDT, alan	no flags	Details Formatted Diff Diff
[fast-cq]Patch (44.76 KB, patch) 2026-03-31 05:20 PDT, alan	no flags	Details Formatted Diff Diff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2026-03-30 14:33:47 PDT

<rdar://problem/173723162>

alan

Comment 2 2026-03-30 16:49:24 PDT

Created attachment 478851 [details] Test reduction

alan

Comment 3 2026-03-30 19:28:13 PDT

Created attachment 478855 [details] Patch

alan

Comment 4 2026-03-30 19:31:13 PDT

Thanks for filing this bug report, David!

alan

Comment 5 2026-03-31 05:20:26 PDT

Created attachment 478859 [details] [fast-cq]Patch

EWS

Comment 6 2026-03-31 09:08:30 PDT

Committed 310313@main (032ddbdc655e): <https://commits.webkit.org/310313@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 478859 [details].

Brent Fulgham

Comment 7 2026-04-29 10:09:23 PDT

This change is present in Safari Technology Preview 242. Please install that revision or newer to confirm the fix. Release notes: https://webkit.org/blog/17934/release-notes-for-safari-technology-preview-242/

Brent Fulgham

Comment 8 2026-04-29 11:46:14 PDT

This change is present in Safari Technology Preview 241. Please install that revision or newer to confirm the fix. Release notes: https://webkit.org/blog/17917/release-notes-for-safari-technology-preview-241/

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