OK, just had this happen to me again when I was in a position to debug it. I had several tabs open. I later went back to the webbrowser-app (don't remember if it restarted or I was opening it fresh or what) and the tabs were gone, replaced by the start page.
The session files seem normal (i.e. they describe the current state of the webbrowser-app). .local/share/webbrowser-app/session.json: {"currentIndex":0,"tabs":[{"uniqueId":"BrowserTab_QMLTYPE_170(0xb87282a8)-1452995535081","url":"http://start.ubuntu.com/current/Google/?sourceid=hp","title":"Ubuntu Start Page","icon":"http://start.ubuntu.com/favicon.ico","preview":"","savedState":"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 GQAZQBuAAIAAAAwAAAABAAAAGgAbAAMAAAAaABpAGQAZABlAG4AAgAAADAAAAAEAAAAcwBhAAwAAABoAGkAZABkAGUAbgACAAAAMAAAAAQAAABpAGUADAAAAGgAaQBkAGQAZQBuAAIAAAAwAAAACAAAAAAAAAAAAPA/ikW+530pBQCLRb7nfSkFAAEAAAAIAAAAAAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD/////AAAAAAEAAAAAAAAAAAAAAAEAAAAYAAAAaHR0cDovL3N0YXJ0LnVidW50dS5jb20vAAAAAPyVRDAUiC4AAAAAAMgAAAABAAAAAAAAAA=="}]} .local/share/webbrowser-app/session.json.lock: 851 webbrowser-app ubuntu-phablet (851 is the current webbrowser-app instance, showing the start page) There are several crash files, but nothing for webbrowser-app. Anything else to try? This has happened to me several times since reporting it ten days ago. Maybe 3 or 4 in that time? Very annoying. And we're about to release OTA 9, presumably with this bug still present. Has anyone else hit this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1531583 Title: Webbrowser-app losing saved state upon restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1531583/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs