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java.lang.NullPointerException: Cannot read field "y" because "this.dragorig" is null
at haven.MapView$FreeCam.drag(MapView.java:298)
at haven.MapView.mousemove(MapView.java:2024)
at haven.Widget.mousemove(Widget.java:824)
at haven.Widget.mousemove(Widget.java:824)
at haven.UI.mousemove(UI.java:422)
at haven.UIPanel$Dispatcher.dispatch(UIPanel.java:64)
at haven.JOGLPanel.run(JOGLPanel.java:519)
at java.base/java.lang.Thread.run(Thread.java:832)
If you hold middle mouse button down and rotate camera when switching to some other camera such as :cam bad or :cam ortho, this error will appear and the client will crash.