JInternalFrame in Motif Look And Feel behaves incorrectly on left and right double click on System menu area.
Steps to reproduce:
  1) Run SwingSet2 demo.
  2) Change Look and feel to Motif Look And Feel.
  3) Double click on system menu area(top left) of Internal Frame using RIGHT mouse and it will close the internal frame this should not happen if we compare it with native.
  4) Double click on system menu area(top left) of Internal Frame using LEFT mouse and it will NOT close the internal frame while ideally frame should be closed, Note this behavior is quite inconsistent and if you try many times than sometimes it closes the Internal frame also.

Note:
Problem in point 3 is present in all version of JDK including tiger.
Problem in point 4 is not present in 1.4.2 b19 and prior and seems to be creeped in Tiger only(It is present in all builds of tiger)