Hello, I just want to add some information, seems if you don't use gnome-keyring it will fail, especially on redhat based linux. I found this also on Chromium and Chrome browser, because I don't use Opera browser, and I guess that the chromium project have use gnome-keyring as default way to secure password account. This happend when you sync your data and some password are sync across, at first it will use gnome keyring to secure the data, and if it's not available, it will keep trying and eventually after you close the brower and reopen it, it will force to do data encryption until it succed where as it won't succeed, especially if you don't use gnome desktop, I just moved from gnome to xfce and it suck, anyway thanks for --password-store=basic flag, now mine also working, so in the end I think we should open bug report on the chromium project about this.