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Created attachment 126445 [details] Screenshot-1 Create a new Java applicaiton project, & add a JPanel to it. Design the JPanel so it closely resembles screenshot-1. Now select jLabel1 & jLabel2 via shift+click sequentialy, (reversing the sequence won't result the issue). Notice that Immediately after selecting jLabel2, the jToggleButton1 disappears. (as shown in screenshot-2) Product Version = NetBeans IDE Dev (Build 201210180002) Operating System = Mac OS X version 10.7.4 running on x86_64 Java; VM; Vendor = 1.7.0_10-ea Runtime = Java HotSpot(TM) 64-Bit Server VM 23.6-b03
Created attachment 126446 [details] Screenshot-2
As you might seen on the screenshots, I added JFrame to the project,... not a JPanel. I mistakenly typed that.
Looks like a layout gap is painted over the button on the second screenshot.