Created attachment 410901 [details] 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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