Bug 210802 - IRS.gov intermittently stops scrolling suddenly
Summary: IRS.gov intermittently stops scrolling suddenly
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Scrolling (show other bugs)
Version: Safari 13
Hardware: iPhone / iPad iOS 13
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2020-04-21 09:50 PDT by tym46383
Modified: 2020-04-22 15:17 PDT (History)
2 users (show)

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Description tym46383 2020-04-21 09:50:15 PDT 
On https://irs.gov, swiping quickly to move the page up or down will sometimes abruptly stop at a random spot in the middle of the page. This doesn't seem to happen on Mac, but it is present on iPad with the latest 13.4.5 beta.

Also, if I try to grab the scrollbar and pull down, it resets to the top. However, if I'm at the bottom of the page and drag it to go up, it works as expected.
Comment 1 Radar WebKit Bug Importer 2020-04-22 15:03:28 PDT 
<rdar://problem/62213022>
Comment 2 Simon Fraser (smfr) 2020-04-22 15:17:24 PDT 
I can reproduce. Doesn't happen if JS is paused, so the page is probably triggering a programmatic scroll.