[Webkit-unassigned] [Bug 266559] New: Safari periodically erasing LocalStorage and IndexedDB for all websites

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=266559

            Bug ID: 266559
           Summary: Safari periodically erasing LocalStorage and IndexedDB
                    for all websites
           Product: WebKit
           Version: Safari 17
          Hardware: Mac (Apple Silicon)
                OS: macOS 13
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Website Storage
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: opendarwin at lapcatsoftware.com
                CC: sihui_liu at apple.com

Safari 17.2 (18617.1.17.11.11, 18617) on macOS 13.6.3 (22G436)

For the past several days at least, Safari has been periodically, seemingly randomly erasing LocalStorage and IndexedDB for all websites simultaneously. Some visible consequences of this is that https://bsky.app is logged out, and the display settings on https://twitter.com are lost. This has been happening around once a day, sometimes twice a day. I have no idea what's causing it.

Via Time Machine backups, I discovered that it happened this morning between 9:23am and 10:47am. I actually did a full diff of my ~/Library folder backups (FileMerge with Full Disk Access is nice), but there weren't a lot of differences, and the only things that seemed interesting and relevant were in the ~/Library/Containers/com.apple.Safari/Data/Library/WebKit/WebsiteData/Default/ folder. The LocalStorage and IndexedDB folders were completely gone, though it looks like the ServiceWorkers folders survived.

Is there any good way for me to disagnose this issue?

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