#35 Exception in DoMouseMove() when redrawing window.

[Anonymous]

NPlot ver. 0.9.8.5
When window with PlotSurface2D control is redrawn
(maximazing from toolbar or switching to) there is an
Exception in
public void DoMouseMove(MouseEventArgs e,
System.Windows.Forms.UserControl ctr )
where
double x = this.PhysicalXAxis1Cache.PhysicalToWorld(
here, true );
Type: Reference is not set to a object.
To avoid this exception i've turned off DateTimeToolTip,
in this case it works properly.