Why are MATLAB figure windows accessible, but cause MATLAB to hang when I create modal Java dialogs in MATLAB 6.5 (R13)?

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MathWorks Support Team
Why are MATLAB figure windows accessible, but cause MATLAB to hang when I create modal Java dialogs in MATLAB 6.5 (R13)?
I have the following code that creates a MATLAB figure and a Java modal dialog box:
dialog = javax.swing.JDialog(javax.swing.JFrame, logical(1))
figure
dialog.setVisible(logical(1))
With the Java modal dialog open, I am unable to access the MATLAB Desktop, as is expected. However, I am still able to click on any open figure windows. Once I do this, MATLAB freezes and I need to manually kill the process.

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MathWorks Support Team
This is a bug in MATLAB 6.5 (R13) that has been reported to our development staff for further investigation.
One possible workaround is to set the visibility all MATLAB figure windows to 'OFF' before setting your Java modal dialog to be visible:
set(findall(0, 'type', 'figure'), 'visible', 'off')
After the Java dialog has closed, you can set all figures to be visible again:
set(findall(0, 'type', 'figure'), 'visible', 'on')

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