Bug 227580

Summary:

Full page scroll snap breaks in iOS Safari 15

Product:

WebKit

Reporter:

Johannes Odland <johannes.odland>

Component:

Scrolling

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED DUPLICATE

Severity:

Normal

CC:

mrobinson, simon.fraser

Priority:

Version:

Other

Hardware:

iPhone / iPad

OS:

Other

Attachments:

Description	Flags
Movie showing page snapping back to first snap target	none

Johannes Odland

Reported 2021-07-01 04:19:23 PDT

Created attachment 432677 [details] Movie showing page snapping back to first snap target Detected in Safari iOS 15 simulator How to reproduce: 1. Go to a page with `html {scroll-snap-type: y mandatory;}` and snap target elements sized in vh, such as this codepen: https://codepen.io/johannesodland/pen/zYwGvXx 2. Try to scroll down Expected result: Page snaps to next scroll target element Actual result: Page snaps back to first target element The bug might be caused by vh units updating as the user scrolls in iOS 15. This works fine in 14.5

Attachments
Movie showing page snapping back to first snap target (632.36 KB, video/mp4) 2021-07-01 04:19 PDT, Johannes Odland	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Simon Fraser (smfr)

Comment 1 2021-07-01 11:04:45 PDT

*** This bug has been marked as a duplicate of bug 226816 ***

Note You need to log in before you can comment on or make changes to this bug.