Thanks for your fast answer. Iam currently using the anchor behaviour, but this isnt working pretty well with litetween (if its activated, there is no tweening possible - because of the anchor behaviour). I disalbed, and enabled the anchor behaviour to tween the sprite, but i get an offset after activating the anchor again. And iam not sure why - so this combo isnt a good solution.
Is there an option to run a function, if the window size is changed? I could code to reposition the sprites by myself. Do you know the best method to code the anchor behaviour?
I would share the capx, but i cant, because its a project fo a customer.