How to fix displayed pointcloud showing {NaN, NaN, Nan} when clicked on.

[TonyPham-ctrl]

Hey y'all, I am currently working on a point cloud registration project using Open3D. Due to certain functionalities I want to implement such as real time coordinate display, I cannot use VisualizerWithEditing() so I used SceneWidget() instead. I followed the example https://github.com/isl-org/Open3D/blob/main/examples/python/visualization/mouse_and_point_coord.py to display coordinates in real time, however, for a majority of points it displays NaN NaN NaN as its coordinates despite being verified that the coordinates DO exist and that they are displayed using coordinates from pcd.points. Any help would be much appreciated.