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Created attachment 117031 [details] Project that exhibits the problem. See Attached Project See this video to duplicate: http://youtu.be/_vyUTmneQlM
Another video showing anchor change on other component. http://youtu.be/Rlx1jCHM6II
Product Version: NetBeans IDE Dev (Build 201203210400) Java: 1.7.0_03; Java HotSpot(TM) Client VM 22.1-b02 System: Windows Vista version 6.0 running on x86; Cp1252; en_US (nb)
Reproducible - I was able to reproduce this issue using the attached project and the steps from the video. A form exhibiting this problem can even be built from scratch: 1. Create a new JFrame. 2. Put JList into top-left corner (with the preferred gaps, of course). 3. Put JComboBox into top-right corner. 4. Add JSpinner such that its bottom edge is aligned with the bottom edge of JList and its right edge is aligned with the right edge of JComboBox. 5. Add JButton just below the JList. 6. Add another JButton on the right side of the first one (buttons should be aligned on baseline). 7. Move JComboBox as shown on the video: its right edge should be aligned with the right edge of the second button and its top edge should be kept aligned with JList.