Build: NetBeans IDE 7.0 M2 (Build 201010151251)
VM: Java HotSpot(TM) Client VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02
OS: Windows 7
AlyonaStashkova: Moved button to another cell within GridBag Customizer
GUEST: GridBagLayout > Change Panel Anchor to PageStart
AlyonaStashkova: Invoked GridBag Customizer, selected the table, moved the upper border down (the table did not resize), moved the bottom border up (the table did not resize), got an exeption
GUEST: GridBagLayout Customizer Dialog -> Chang Fill Property to Fill Horizontal
AlyonaStashkova: tried to expand button within GridBad to occupy more than one cell
Created attachment 102539 [details]
I am able to reproduce this exception in NetBeans 7.0 M2 using the following steps:
1. Create JFrame.
2. Set frame's layout to GridBagLayout.
3. Add JButton.
4. Invoke Customize Layout on the frame.
5. Select the button in the customizer.
6. Close the customizer.
7. Open the customizer again.
8. Move the button into another cell
=> exception is thrown.
The same steps performed in the latest development build no longer lead to the
exception. The exception was caused by customizer's listener that was not
unregistered when the customizer was closed. This was fixed in