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 Touch seeded packages, which is subscribed to webbrowser-app in Ubuntu. https://bugs.launchpad.net/bugs/1531583 Title: Webbrowser-app losing saved state upon restart Status in webbrowser-app package in Ubuntu: New Bug description: I've noticed that lately on my rc-proposed dogfood mako that sometimes webbrowser-app will be OOM (or crash?) and restarted but lose all its previous tabs. Which is super annoying. I told myself I'd leave it alone next time it happened and grab the logs. Here they are. Nothing super jumped out at me. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1531583/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp