lineWidth is ignored

I am playing with overlays with MINERVA and RECON3 map. All works well but I met one limitation: I want to change the lineWidth of the reactions that I highlight but the content of the lineWidth column does not seem to have any effect. In the following example of an overlay:

# VERSION=1.0
# NAME=test
# DESCRIPTION=test
name	reactionIdentifier	lineWidth	color
	re2	0.1	#FF0000
	re1	1	#00FF00
	re3	5	#00FF00
	re4	10	#00FF00

all reactions are highlighted having the same line width.

reported by Andrei.Zinovyev