When the component is removed from a Container and later added there, nothing happens.
Please see attached java source for demonstration.
Initially three test components are created, then using a button they are changed in the BorderLayout.CENTER.

First try it as is. You will get "Test component 1", "Test component 2" and "Test component 3".
Then change line 70 to:
boolean setBounds = true;
and run again. This time the labels will cycle as you click infinitely.

I was able to reproduce it on 1.6.0_02 and 1.5.0_12 on linux and windows.