Bug 1753729 I meet this issue and take me quite some time to located the problem is my disk available space is too low. I lost 200K history entries without any acknowledgement. Angry user, and surely I am not the only one. Firefox should prompt alert or confirmation before it purge the database.
Bug 1772746 Comment 0 Edit History
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Bug 1753729 I meet this issue and take me quite some time to located the problem is my disk available space is too low. I lost 200K history entries without any acknowledgement. Angry user now I am, and surely I am not the only one. Firefox should prompt alert or confirmation before it purge the database.