This a very old bug, since the first version of aurorae and at least occuring in two different distributions I tested and one of the reasons I don't use this theming machine. Furthermore I wasn't able to find the right category for Aurorae in this bug tracker.
This is what I do/get:
- Select any Aurorae decoration
- Click on the window decoration and move the window directly
==> window doesn't move (only mouse pointer)
- Click on the window decoration and wait a second, then move
==> window moves as expected
I don't check the code, but is there a time consuming calculation or a timer which interupts the event-loop?