When changing the line width of grouped lines, the value keeps reading 0.000 in the stoke style box

[Brian]

Running Windows 10 64-bit

Using version .91

I grouped 2 straight lines together perpendicular to each other. I then try to change their line widths. The width changes, but the value I type in changes to 0.000 everytime I put in a new width. It's more about the information being shown than the action.

Thanks.