When I group a few objects together, and apply drop shadow to the group, I cannot edit the individual object in the group (cannot pick it to move it or resize it etc) without removing the drop shadow.
Click on the Drop Shadow of the group object. This will select the whole group. Now Click on the object you want to select holding Ctrl & Alt keys together.
Thanks for your answer.
Although that seems to be the correct way it should work, but I always end up selecting the whole drop shadow group instead of the individual object, though once a while I can select the object as intended.
From a random test, out of 10 times I tried, it selects the drop shadows group 6 times, selects the object 4 times.
In Juan's example, I could not select the yellow pentagon. Always end up with the red circle or whole drop shadow group.