Do you mean in your application, the form is auto resized when you drag and move the it. Unfortunately I cannot reproduce the issue you have. Could you please told us the detail steps to reproduce your issue? You could also upload your demo project
to skydrive, I would have a look at it.
If there are any progress, please feel free to let me know.
MSDN Community Support | Feedback to us
Please remember to mark the replies as answers if they help and unmark them if they provide no help.