Bug 220623

Summary:

onpagehide/onpageshow event listeners on WKWebView with bfcache intermittently not firing

Product:

WebKit

Reporter:

chris.boakes

Component:

Page Loading

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

achristensen, beidson, cdumez, smoley, thorton, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

WebKit Local Build

Hardware:

iPhone / iPad

OS:

iOS 14

Attachments:

Description	Flags
Demonstration of the events not firing as expected	none

Description chris.boakes 2021-01-14 06:15:43 PST

Created attachment 417613 [details]
Demonstration of the events not firing as expected

Have isolated the problem and can be seen here: https://lucid-shaw-b293da.netlify.app/

In WebView browser:

1. Navigate to Page 1
2. You should see the console.log “onpageshow - page 1, load”
3. Navigate to Page 2 
4. You should see the console.log “onpageshow - page 2, load”
5. Use the back button and you should see the console.log “onpageshow - page 1, load”
6. Go back and forth between Page 1 and 2 and the console logs intermittently do not fire

The expected behavior is that the onpageshow and onpagehide to fire every time but the events do not always fire when navigating backwards to a cached page

Comment 1 Radar WebKit Bug Importer 2021-01-21 06:16:15 PST

<rdar://problem/73450015>