rviz ignores origin if it has decimal values

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Hello,

I'm trying to modeling my first robot using URDF. The problem that I have is that when I visualize it with rviz, I can see that the joint's origins are ignored if they contains decimal points (for instance, something like "origin xyz="0 0 -0.08""). If, however, I use a comma to write decimal values on the origins (such as "origin xyz="0 0 -0.08""), everything works well.

This wouldn't be a problem if xacro didn't complain when I try to use math operations with comma decimals. So it is not clear to me if this is a bug on xacro, on rviz or if I am doing something wrong.

Anyone would have a clue of what can be happening?

For your reference, I am using ROS Lunar.

Thank you very much in advance.

Regards