Bug 309252

Summary: [WPE][GTK] Scrolling slowly with finger doesn't work
Product: WebKit Reporter: Vitaly Dyackhov <vitaly>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Test page none

Vitaly Dyackhov
Reported 2026-03-05 06:11:30 PST
Created attachment 478565 [details] Test page When scrolling with a finger on touch screen very slowly, so that delta is less than 1.0, the page doesn't move. It's a result of rounding scroll position in `ThreadedScrollingTreeScrollingNodeDelegate::adjustedScrollPosition()`. Note that iOS doesn't use `ThreadedScrollingTreeScrollingNodeDelegate` and in the base `ScrollingTreeScrollingNodeDelegate` class implementation `adjustedScrollPosition()` returns unmodified position.
Attachments
Test page (1.91 KB, text/html)
2026-03-05 06:11 PST, Vitaly Dyackhov 		no flags
Details
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Vitaly Dyackhov
Comment 1 2026-03-13 08:45:02 PDT
Pull request: https://github.com/WebKit/WebKit/pull/60560
EWS
Comment 2 2026-03-16 05:50:29 PDT
Committed 309315@main (e7e61af4273f): <https://commits.webkit.org/309315@main> Reviewed commits have been landed. Closing PR #60560 and removing active labels.
Radar WebKit Bug Importer
Comment 3 2026-03-16 05:51:11 PDT
<rdar://problem/172655742>
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