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Build: NetBeans IDE 8.1 Beta (Build 201507231027) VM: Java HotSpot(TM) 64-Bit Server VM, 25.45-b02, Java(TM) SE Runtime Environment, 1.8.0_45-b14 OS: Windows 8 User Comments: GUEST: layout problem mienamoo: I was executing the steps of this test: http://services.netbeans.org/synergy/client/app/index.html#/case/1306/suite/1073/v/1 In step 5, when dragging the components outside of the panel, this exception occurred. GUEST: dragging multiple items [snapping to default sized horizontal separator] GUEST: moving 3 text fields GUEST: laying out GUI Stacktrace: java.lang.AssertionError at org.netbeans.modules.form.layoutdesign.LayoutInterval.getCurrentSpace(LayoutInterval.java:503) at org.netbeans.modules.form.layoutdesign.LayoutInterval.getCurrentPositions(LayoutInterval.java:1024) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.restrictedCopy(LayoutDesigner.java:1142) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.restrictedCopy(LayoutDesigner.java:1045) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.restrictedCopy(LayoutDesigner.java:1045) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.endMoving(LayoutDesigner.java:799)
Created attachment 154857 [details] stacktrace
This looks very similar to bug 253745 (including the fact that people report multiple component dragging). *** This bug has been marked as a duplicate of bug 253745 ***