On german server there are some players who haven‘t gotten a drop of elemental earth since the update. This is Uiqua‘s anser:
Hello everyone,
yes, we took our time for the problem, because we wanted reliable results. After intensive analysis it was clear that you had an immense cube bad luck. That is the result after hunderds of simulated production processes.
Nevertheless we have changed the formula regarding the drop chances with the production, since we can understand your frustration.
After the new adjustment we tested again. The basis was a 24-hours-production with 30 buildings. In this case, we have simulated some hundred runs, as well. As average we now have 3 elemental drops per day as a result
Still, the longer a production is, the higher is the drop chance is.