CRJ700 virtual cockpit flight stick texture error

Hi. Im on FSX Steam Edition. When I am in the virtual cockpit of the crj700 and move the flight stick, a part of the stick does not move with the rest.
Image A (flight stick at rest): https://ibb.co/5hDzyQr
Image B (flight stick moved): https://ibb.co/F7RwMQg
I have found nothing about that on the internet. It seems to be a bug only I get. Any ideas?