Exception when dragging a image file over Scene Builder

To reproduce:
1) Run SB
2) Drag the attached image file (TableViewTestV2.png) over the content view
    -> as soon as the image file is over SB, the following exception is thrown
    -> this happens in any parts : Hierarchy, Content or Inspector

Glass detected outstanding Java exception at -[GlassViewDelegate sendJavaDndEvent:type:]:src/com/sun/mat/ui/GlassViewDelegate.m:873
Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: PrismEventUtils.convertToTransferMode: bad drop action: 4fffffff
at com.sun.javafx.tk.quantum.PrismEventUtils.convertToTransferMode(PrismEventUtils.java:193)
at com.sun.javafx.tk.quantum.PrismEventUtils.glassDragEventToFX(PrismEventUtils.java:147)
at com.sun.javafx.tk.quantum.PrismEventUtils.glassDropTargetEventToFX(PrismEventUtils.java:172)
at com.sun.javafx.tk.quantum.QuantumToolkit.convertDropTargetEventToFX(QuantumToolkit.java:1145)
at javafx.scene.Scene$DropTargetListener.dragOver(Scene.java:2524)
at com.sun.javafx.tk.quantum.GlassSceneDnDEventHandler.handleDragOver(GlassSceneDnDEventHandler.java:147)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleDragOver(GlassViewEventHandler.java:403)
at com.sun.glass.ui.View.handleDragOver(View.java:700)
at com.sun.glass.ui.View.notifyDragOver(View.java:1009)