OnConstruction called at the first instanciation but also when one parameter is changed (including during the drag and drop of the blueprint). PostActorCreated is also called during drag and drop.
Some guys from EPIC advice me that even if GUID seems unique and permanent for the moment that “may” change.
Well I know that I could handle this by a little trick in the code with an “uninitialized” value to handle the run my code only one time. But I’m trying to be as clean as possible.