Non-uniform scaling of model distorts vector glyphs

[OKaluza]

• Plot some vector arrows
• Scale on one axis, eg: scale z 10
• Vector arrows are stretched in z axis instead of remaining unscaled
• Should be drawn the same but at scaled positions

This is a regression, so lets add a test for this too

[OKaluza]

This is actually only a problem if the scaling is applied after vectors created, to fix the vectors must be reloaded after scaling