Could not dealing with rear obstacles

[ferasterkawi]

Hi!

I put 2 obstacles (Gazbo box obstacles in the same dimension), one of them in front side of the robot (and its ), the other in the rear side.

Unfortunately the rear one has not been recognized and in my case I need the rear side lines.

Is there any method to deal with it?

[ferasterkawi]

After adjusting the parameters, the box is recognized but with non logical result
start: [-0.9085191488265991, -0.0637034997344017]
end: [-0.9086759686470032, 0.0317360945045948]

The difference between the tow y coordinates must be 1 meter