MathAction #433 viewport manager does not restart

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If somebody could fix this quickly, (s)he'd make me very happy:

In a fresh session:

axiom

o := point [0,0]

$\label{eq1}\left[ 0, \: 0 \right]$

Type: Point(Integer)

axiom

v1 := point [1,0.5]

$\label{eq2}\left[{1.0}, \:{0.5}\right]$

Type: Point(Float)

axiom

g := makeGraphImage ([[o, v1]], [red()],  [blue()], [6])$GRIMAGE

   Graph data being transmitted to the viewport manager...

$\label{eq3}\mbox{\rm \hbox{\axiomType{Graph}\ } with}1 \mbox{\rm point list}$

Type: GraphImage

axiom

makeViewport2D(g, [])$VIEW2D

   FriCAS2D data being transmitted to the viewport manager...

$\label{eq4}\mbox{\rm \hbox{\axiomType{TwoDimensionalViewport}\ } :}\mbox{\tt "FriCAS2D"}$

Type: TwoDimensionalViewport

close the graphics window, then

axiom

makeViewport2D(g, [])$VIEW2D

   FriCAS2D data being transmitted to the viewport manager...

$\label{eq5}\mbox{\rm \hbox{\axiomType{TwoDimensionalViewport}\ } :}\mbox{\tt "FriCAS2D"}$

Type: TwoDimensionalViewport

I then get

But nothing happens...