Problem moving widget after breaking layout

Hello,
I am having a problem moving widgets that were previously in a layout using the Qt Designer.

Here are the sequence of events to reproduce the issue:
1) Open a mainwindow widget that has children widgets in a layout (mainwindow widget is opened in KDevelop).
2) Right-click on a child widget, select break layout.
3) Attempt click and drag the widget. The widget snaps back in place.

Here are my tool specs:
Qt version 4.5.1
Qt Designer V 4.2.1 Open Source Edition
KDevelop V3.5.5

Once I break the layout I can resize the child widgets all I want, but I have no luck moving the widgets by clicking and dragging them. I can move the widget through the property editor though.

Thanks in advance.