We recently found and fixed an odd bug related to the optional 6AM Daily Task Summary email that you can get from Kerika: if you had toggled the preference setting for this email — from ON to OFF, and back to ON again — the email was getting sent at 8AM instead of 6AM.
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Essentially a coding mistake on our part, and one we didn’t notice (and none of our users noticed, either) for a long time because no one would try changing this preference setting very often.
The bug’s been fixed.