My problem is: I have my object created to a container (to a characters inventory), and when I place it to the world at the first time, it seems the object's actor has an impulse or force. I made a video, I hope it show it enought.
Important:
Originally I didn't added any force or impulse to the actor, and the sword or the shield just impacted to the ground with big force, and fly away... I fixed this - before place the sword to the world, then applied an actor.sleep() - it worked... now in the video I added an impulse to the sword after the "sleep" (I wanted to simulate I really hit out it from the hand), and I got the problem returned, but only for the first time... when the skeleton drop the sword again, there is no problem.