tensorboard add_mesh is not working properly

Hi,

I started to use some mesh tools from tensorboard, specifically, mesh. and I realized, this is not plotting correctly with the indicator.

        for i in range(20):
            writer.add_mesh(f'mesh/pred', pred[0][i:i+1],
                            colors=np.ones(pred[0][i:i+1].shape) * np.array([[[255, 0, 0]]]),
                            global_step=i)
            writer.add_mesh(f'mesh/target', target[0][i:i+1],
                            colors=np.ones(pred[0][i:i+1].shape) * np.array([[[0, 255, 0]]]),
                            global_step=i)

Start by reproducing the reported behavior from the issue's Python snippet using tensorboard's add_mesh calls and the attached image as the current result. Trace the add_mesh rendering path and determine what corrected indicator behavior should be verified, then add or run a focused regression test if the relevant test location is identified.