[Webkit-unassigned] [Bug 185503] New: Web Inspector: browser tab crashes on observablehq.com

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185503

            Bug ID: 185503
           Summary: Web Inspector: browser tab crashes on observablehq.com
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ivanreese at gmail.com
                CC: inspector-bugzilla-changes at group.apple.com

On various pages at observablehq.com, opening the Web Inspector causes the browser tab to immediately crash and reload the page. I've reproduced this in both Safari 11.0.3 (13604.5.6) and Safari TP 55 (13606.1.15).

Pages that exhibit this issue:

https://beta.observablehq.com/@mbostock/introduction-to-generators
https://beta.observablehq.com/@mbostock/five-minute-introduction
https://beta.observablehq.com/@mbostock/introduction-to-notebooks
https://beta.observablehq.com/@jashkenas/night-skies-lights-and-light-pollution-globe

(Those are the first 4 I tried.)

If the page is loaded with the inspector already open, it does not crash the browser tab. However, if the inspector is then closed, the browser tab does crash.

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