🚀 go-pugleaf

Is this a bug or am I missing something? I did the following in JB2005:
1. Created a simple application with just a content pane.
2. Added a JFormattedTextField with a mask. Code looks as so:

private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(null);
        setSize(new Dimension(400, 300));
        setTitle("Field Problem");
        MaskFormatter msk = new MaskFormatter("#");
        JFormattedTextField jFormattedTextField1 = new 
JFormattedTextField(msk);
        jFormattedTextField1.setFont(new java.awt.Font("SansSerif", 
Font.BOLD,28));
        jFormattedTextField1.setText("0");
        jFormattedTextField1.setBounds(new Rectangle(142, 119, 60, 30));
        contentPane.add(jFormattedTextField1);
    }

3. Ran the above. Application worked, with a largeish field that only allows 
one number to be entered.
4. Added a second field -  code looks as so:

private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(null);
        setSize(new Dimension(400, 300));
        setTitle("Field Problem");
        MaskFormatter msk = new MaskFormatter("#");
        JFormattedTextField jFormattedTextField1 = new 
JFormattedTextField(msk);
        jFormattedTextField1.setFont(new java.awt.Font("SansSerif", 
Font.BOLD,28));
        jFormattedTextField1.setText("0");
        jFormattedTextField1.setBounds(new Rectangle(142, 119, 60, 30));
        contentPane.add(jFormattedTextField1);
        JFormattedTextField jFormattedTextField2 = new 
JFormattedTextField(msk);
        jFormattedTextField2.setFont(new java.awt.Font("SansSerif", 
Font.BOLD,28));
        jFormattedTextField2.setText("0");
        jFormattedTextField2.setBounds(new Rectangle(1, 1, 60, 30));
        contentPane.add(jFormattedTextField2);
    }

5. System now places me on the jFormattedTextField2 when I run the 
application. If I immediately tab to the other field, and start entering 
data, then the mask is completely ignored in the other field 
(jFormattedTextField1). If I the exit and return to the field, the mask 
suddenly starts working!

Am I doing something completely dumb? Note that this came up because I was 
trying to set up an array of jFormattedTextFields, and found that the masks 
were inconsistently applied!

ATB

John B