Set also the width of the GaugeTree when resizing the GaugePanel GWT is no longer able to calculate and set the correct width of the GaugeTree since the GaugeTree is added via a Canvas wrapper. Therefore set the width manually when resizing the GaugeTree.

SYMBOLSET
SYMBOL
  NAME 'point'
  TYPE ELLIPSE
  POINTS
    1 1
  END
  FILLED TRUE
END
SYMBOL
  NAME "square"
  TYPE VECTOR
  POINTS
    0 0
    0 1
    1 1
    1 0
    0 0
  END
  FILLED TRUE
END
END