[Webkit-unassigned] [Bug 276699] New: We are encountering an occasional issue with WKWebView displaying a blank screen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=276699

            Bug ID: 276699
           Summary: We are encountering an occasional issue with WKWebView
                    displaying a blank screen
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Page Loading
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: zyy71104233 at aliyun.com
                CC: beidson at apple.com

We are encountering an occasional issue with WKWebView displaying a blank screen. Once this problem occurs, all WKWebView pages show blank screens, and only restarting the app resolves it. Upon reviewing the logs, we observed that - (void)webView:(WKWebView *)webView didCommitNavigation:(null_unspecified WKNavigation *)navigation; is called, but - (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation; is not. The network connection is stable because native networking requests are functioning properly.

This issue has persisted for a while, starting as early as iOS 13, though the exact iOS version when it first appeared is uncertain. We have been inspecting the WebKit source code but haven't identified the root cause. Could you please suggest diagnostic tools or methods to pinpoint the underlying issue?thanks very much.

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