Bug 308680 – Web Inspector: Previewing resources in Web Inspector displays "An error occurred trying to load the resource" when Preserve Log is enabled

• Status: RESOLVED
• Resolution: FIXED
• Component: Web Inspector

[Roy Reapor]

Previewing resources in Web Inspector displays "An error occurred trying to load the resource" when Preserve Log is enabled. 

Setup: 
1. Open Safari. 
2. Show Web Inspector in the Network tab enable "Preserve Log" by clicking on the filter icon and clicking Preserve Log
3. Quit Safari

Steps to reproduce:

1. Open Safari
2. Navigate to webkit.org
3. Open Web Inspector. Select Network tab. Filter by Document.
4. Do not click on the webkit.org document
5. Navigate to webkit.org/blog
6. In Web Inspector click on the Document `webkit.org` .
7. The Preview should not say `An error occurred trying to load the resource`

[Roy Reapor]

Patch incoming. The Web Inspector UI does not synchronize "Perserve Log" to the Web Inspector backend. The resources are actually deleted in the back end when the user navigates away. You can workaround this issue by clicking on resources on the UI before navigating away. This is hard to do when you have HTML or HTTP redirects.

[Radar WebKit Bug Importer]

<rdar://problem/171216835>

[Roy Reapor]

Pull request: https://github.com/WebKit/WebKit/pull/59463

[EWS]

Committed 308559@main (4ec1778cf0a7): <https://commits.webkit.org/308559@main>

Reviewed commits have been landed. Closing PR #59463 and removing active labels.