One of truss elements is missing when setting the line width larger than 1

Dear Paraview community,

Attached is a simple .vtk file for my truss elements.

From the below picture it can be seen that the two truss elements normally show on the screen.

But, when the line width is set larger than 1, like 2, then the left truss is missing, which is shown in the following.

doubleCantilever_bars_48_10.vtk (608 Bytes)

Can anybody tell me the reason for this? Thanks a lot!
Jie Wu

Can anybody help me with this issue? Thank you!

Jie Wu