We are using drag&drop from a tree to a tab. And the action method of the drag support is never get called.
This is running richface 3.2.2 with seam 2.0.2.sp1.
Previously running richface 3.2.1, the action method would be called although the drag/drop value were not set. Our workaround was to use the action param.
We would like to get it running in 3.2.2 because we want to use Fiji soon in next year.
The only migration issue with the same symptoms I know about is caused by usage of ui:repeat (invokeOnComponent method is not implemented there). If that is the case replace it with a4j:repeat. If not then please post full page code and we'll check.