Procedural grid graph produce "block node"

Hello, I am currently using a procedural grid mover for pathfinding around my main character. However, the procedural grid mover automatically creates something I call a “block node.” It blocks the path even when there are no obstacles present. I can show it in the picture below:

In the picture above, there are some nodes that appear bold. These nodes are created automatically even in an empty environment like the one shown. Is the block node really a feature? Is there any way I can get rid of it?

Hi

Do you update the world procedurally? Are you sure the world exists at the point in time when the procedural grid mover scans that part of the graph?