[Webkit-unassigned] [Bug 207104] New: WKWebView randomly stops loading pages

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207104

            Bug ID: 207104
           Summary: WKWebView randomly stops loading pages
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: stefan at arentz.ca

Apologies this is a bit of a vague bug. I will explain what I experience but am definitely asking how to provide better diagnostics.

Steps to reproduce:

In the same tab:

 - Open news.ycombinator.com
 - Open the next link there
 - Go back
 - Open the next link there ...

Repeat for 20 to 30 page. May depend on iOS device - it definitely took more than a dozen pages on an iPhone X with iOS 13.3.

(There is nothing news.ycombinator.com specific here, it is just a handy site to flip through a bunch of random pages)

At one point pages stop loading. They load as blank, or even with the page background color, but no content appears. However you can scroll and (pinch to) zoom and sometimes some content erratically appears and disappears. It is as if the page has become ultra sensitive to zoom/scroll.

The only way to get the tab back to a usable state is to close it and open a new one. Reload does not work. As soon as this happens, the tab is broken with no way out.

Experienced on Safari iOS 13.3 and also Firefox iOS 22. Not just by me, plenty of reports on Twitter.

What kind of diagnostics can I provide?

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