Bug 243190 - css column-count nesting with position absolute has wrong offset parent at nesting level 3 and greater
Summary: css column-count nesting with position absolute has wrong offset parent at ne...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: CSS (show other bugs)
Version: WebKit Local Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-07-25 18:49 PDT by aaron
Modified: 2022-08-01 18:50 PDT (History)
4 users (show)

See Also:

Attachments
test case showing level 3 nesting detached from offset parent positioning (525 bytes, text/plain)
2022-07-25 18:50 PDT, aaron 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description aaron 2022-07-25 18:49:12 PDT 
nested divs with column-count >= 2 and absolute positioning has incorrect layout at third level and lower. It looks like the third level and subsequent levels get set to positioning from document not offset parent.


	<div style="position:absolute; top : 50px;left:50px; border : 1px solid red;column-count:2;background-color : white">
		<div>level1</div>
		<div>level1</div>
		<div style="position:absolute; top : 50px;left:50px; border : 1px solid red;column-count:2;background-color : white">
			<div>level2</div>
			<div>level2</div>
			<div style="position:absolute; top : 50px;left:50px; border : 1px solid red;column-count:2;background-color : white">
				<div>level3</div>
				<div>level3</div>
			</div>
		</div>
	</div>
Comment 1 aaron 2022-07-25 18:50:29 PDT 
Created attachment 461209 [details]
test case showing level 3 nesting detached from offset parent positioning
Comment 2 Radar WebKit Bug Importer 2022-08-01 18:50:15 PDT 
<rdar://problem/97950512>