Dear Twang,
Thanks for reaching out. Is the issue still present for you?
After discussing with an internal team about the initial post, we considered the cause was more likely to be in the input data based on the information provided, but to confirm that and assist you further with the issue, we would need more information, such as the FBX file used, screenshots or recording with a higher resolution than the ones attached, or any console logs available, if you would like to share them with us please.
Kind regards,