Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: bd2ec2eac1cd773069c44813a09c5fa2d5806f02
      
https://github.com/WebKit/WebKit/commit/bd2ec2eac1cd773069c44813a09c5fa2d5806f02
  Author: Alan Baradlay <[email protected]>
  Date:   2026-08-10 (Mon, 10 Aug 2026)

  Changed paths:
    M 
LayoutTests/fast/repaint/transform-absolute-in-positioned-container-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollable-overflow-relative-positioned-block-in-inline-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollable-overflow-relative-positioned-block-in-inline.html
    M LayoutTests/platform/glib/fast/encoding/utf-16-big-endian-expected.txt
    M LayoutTests/platform/glib/fast/encoding/utf-16-little-endian-expected.txt
    M 
LayoutTests/platform/glib/fast/repaint/transform-absolute-in-positioned-container-expected.txt
    M LayoutTests/platform/mac/fast/encoding/utf-16-big-endian-expected.txt
    M LayoutTests/platform/mac/fast/encoding/utf-16-little-endian-expected.txt
    M 
Source/WebCore/layout/integration/inline/LayoutIntegrationInlineContentBuilder.cpp

  Log Message:
  -----------
  A block level box on a line reports its scrollable overflow at its static 
position
https://bugs.webkit.org/show_bug.cgi?id=321363

Reviewed by Antti Koivisto.

Apply the in-flow position offset to the line's scrollable overflow rect for 
block level elements.

* 
LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollable-overflow-relative-positioned-block-in-inline.html:
 Added.
* 
Source/WebCore/layout/integration/inline/LayoutIntegrationInlineContentBuilder.cpp:
(WebCore::LayoutIntegration::InlineContentBuilder::adjustDisplayLines const):
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-overflow/scrollable-overflow-relative-positioned-block-in-inline-expected.txt:
 Added.
* 
LayoutTests/fast/repaint/transform-absolute-in-positioned-container-expected.txt:
* LayoutTests/platform/glib/fast/encoding/utf-16-big-endian-expected.txt:
* LayoutTests/platform/glib/fast/encoding/utf-16-little-endian-expected.txt:
* 
LayoutTests/platform/glib/fast/repaint/transform-absolute-in-positioned-container-expected.txt:
* LayoutTests/platform/mac/fast/encoding/utf-16-big-endian-expected.txt:
* LayoutTests/platform/mac/fast/encoding/utf-16-little-endian-expected.txt:

progressions: content scroll now horizontally matching Chrome and Firefox.
Canonical link: https://commits.webkit.org/318885@main



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