L&F change 'features'

I am finalizing a Swing application and one feature is that the user can set the L&F from a menu. I have found two 'features' which seem weird.
1) A JTree which has a home grown D&D TransferHandler added. When I change the L&F the TransferHandler is replaced by the default TransferHandler!
A workaround is easy � I just overload the JTable.updateUI() method so that it re-installs the home grown D&D TransferHandler.
2) Similar to the first � A JTable with a home grown Renderer. When I change the L&F the Renderer is replaced by the default Renderer! The workaround uses the same mechanism as in 1). It is interesting that the header renderer does not revert to the default when the L&F changes!
Now, my question is � would this be expected behavior and if so why?

There are more (and I cant remember them all). I
encountered them when doing a similar sort of thing -
that is allowing dynamic L&F updates (well, schemes
of a particular L&F).
One of them was using a DefaultTreeCellRenderer - it
did not act upon UI updates properly.Since a cell renderer is not part of the Swing component tree I expected problems with them so I took pre-emptive action and made sure I created new ones.
>
Also, you'll have an issue with JPopupMenu's that are
not attached to windows in any form - I had to
explicitly call update the UI of this upon show.I met this one and took pre-emptive action. Again, since the unattached JPopupMenu will not be part of the Swing component tree this makes sense.
>
Also JToolbar had a huge problem - I had to implement
my own version of
SwingUtilities.updateComponentTreeUI to ensure that
the components were updated before the toolbar
itself. This problem may be related to the 3rd party
L&F I use however.I have not met this one. I will bear it in mind for the future.
>
Yeah, so basically, beware :)Yes, beware! The one that concerned me was the D&D problem. I still can't see why this happens.

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