Arch Linux has packaged an alpha build that could cause data loss
It appears that an alpha build of Anki has been included in the Arch package manager. The alpha builds are not ready for regular use yet, and bugs could cause data loss, so it should not have been packaged. If you are an Arch user, please uninstall the alpha and report the issue to the package maintainer.
The latest stable release of Anki is 2.0.x, and compiled builds of it are available on https://apps.ankiweb.net. The compiled builds have apparently been packaged for Arch as well: https://aur.archlinux.org/packages/anki20-bin/