Created Unassigned: TextKerning works only with negative values [1425]

Drawables TextKerning works only with negative values and shrink text. But positive values has no effect.

new Drawables()
.Font(fontName, FontStyleType.Any, action.FontWeight, FontStretch.Any)
.FillColor(color)
.FontPointSize(fontSize)
.TextAntialias(true)
.TextAlignment(action.Alignment)
.Text(positionInPixels.X, positionInPixels.Y, text)
.TextKerning(-5) // -5 works +5 has no effect (but regarding to magic documentation must work)
.Draw(canvas);