I've also endured permanent password loss. Unfortunately, not only generated ones but also one of Device Private passwords went missing.
I noticed it twice already, but no clear steps to reproduce. All I got was repeated "Could not load cell content: key unavailable" warn similar to David's present in logbook.
Unfortunately I've been completely unable to reproduce these issues thus far. If your passwords are getting lost often, that means there's definitely something in your usage / situational pattern that's enabling this bug which is missing from mine. All I can recommend at this stage is to make an export when you make a significant change (such as saving personal passwords) and trying really hard as soon as the issue recurs to see if you can establish what about your recent past might have triggered it. Sadly, the logs only record the current application run, not previous, meaning we only see the result of the corruption, not the cause.
on 27 Feb, 2018 08:45 PM
I'm having this problem too. I don't get any error messages at all. When I go to use a password it has simply disappeared completely & I have to re-create it again. This has happened at least three times over the last couple of months. It's a bit maddening.
I got also the same issue. I almost locked myself out, fortunately I exported some passwords the last time this happend.
Sometimes after reopening the list is empty, when I close the application and reopen it, some entries re-appear. I'm using the app with the fingerprint authentication.
Please fix this, can't afford to lose accounts because of this. Thanks!