Selecting an addressbook unchecks all others

When selecting an addressbook, all other addressbooks become unchecked. It is not happening all of the time and there is not recognizable pattern for this behavior. It is really annoying having to check on the other addressbooks all of the time.

Hello Frank,

In which version does this problem occur? You can find it out in Menu > Help > About.
By any chance, does it happen when you click between the unchecked checkboxes? This would cause exactly what you described.