QCustom3DItem::scalingAbsolute is not respected in a Q3DScatter set to polar

Steps:

• create a Q3DScatter 
• set the Q3DScatter's polar property to true
• create a QCustom3DItem from a .obj file with a scaling of {1, 1, 1}
• set the QCustom3DItem's scalingAbsolute property to false
• set the Q3DScatter's axis min and max values
• add the QCustom3DItem to the Q3DScatter

Expectations:

• The custom item is scaled in data values

Reality:

• The custom item is scaled in absolute values

Remarks:

Changing the aspect ratio of the polar plot does not affect the display of the custom item.

This does not happen if the scatter is not in polar mode. In cartesian coordinates, the custom item is correctly scaled to data values and aspect ratio affects the display of the custom item.