Bug 241730

Summary: IntersectionObserver stops tracking when cmd+ is used to zoom in
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: DOMAssignee: Simon Fraser (smfr) <simon.fraser>
Severity: Normal CC: simon.fraser
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=241951
Description Flags
Test none

Description Simon Fraser (smfr) 2022-06-17 16:05:19 PDT
When Zooming IN using cmd +, IntersectionObserver stops observing. 

Steps To Reproduce:
1. Open the attached example
2. Scroll Down
3. Assert it works fine and highlights the items at around 35% from top.
4. Now zoom in.
5. Assert it no longer highlights
Comment 1 Simon Fraser (smfr) 2022-06-17 16:05:48 PDT
Created attachment 460317 [details]
Comment 2 Simon Fraser (smfr) 2022-06-17 16:17:55 PDT
Pull request: https://github.com/WebKit/WebKit/pull/1604
Comment 3 Simon Fraser (smfr) 2022-06-23 18:43:12 PDT
Comment 4 EWS 2022-06-24 10:15:56 PDT
Committed 251829@main (ee62d87260e8): <https://commits.webkit.org/251829@main>

Reviewed commits have been landed. Closing PR #1604 and removing active labels.