[Webkit-unassigned] [Bug 217503] New: Web Inspector: Search Resource Content hangs on YouTube

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=217503

            Bug ID: 217503
           Summary: Web Inspector: Search Resource Content hangs on
                    YouTube
           Product: WebKit
           Version: Safari 14
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: opendarwin at lapcatsoftware.com
                CC: inspector-bugzilla-changes at group.apple.com

Created attachment 410901

  --> https://bugs.webkit.org/attachment.cgi?id=410901&action=review

Sample of Safari Web Inspector

The Safari Web Inspector hangs whenever I search on YouTube.

This happens in Safari 14.0 (15610.1.28.1.9) on macOS 10.15.7 (19H2). It also happens in Safari Technology Preview 114 released today, and in Safari 14.0 (14610.1.28.1.10) on macOS 10.14.6.

Steps to reproduce:
1. Open https://www.youtube.com
2. Show Web Inspector
3. Press command-shift-f to Search Resource Content
4. Enter "ytp-" in the search field and press return

Attached is an Activity Monitor sample of the Safari Web Content process, which runs at around 100%

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