That is not a bug, it's a feature. JComboBox recognizes when you use the same var for more than one box. The first box is called the master, all the others observer. If you change the master, the observers follow.

Really a strange "feature" IMHO, but it is documented, in the section "The Choices option" of the JComboBox docs

In reply to Re^5: problem with Tk::JComboBox by jethro
in thread problem with Tk::JComboBox by Anonymous Monk

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