local_path not showing in rviz while robot navigates

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Hi Folks,

I'm trying to show the local path when my robot is navigating, but the path only shows for about 1/4 of a second, disappears for about 10 seconds, then repeats.

I know I am subscribing to the right topic because, like I said, I can see the local path. But why is it behaving that way? Any parameters I need to update (maybe through dynamic configuration while the robot runs), or is there a more appropriate topic I shall subscribe to?

The global path shows up fine, and it stays until the robot reaches the goal point.