In FlightGear 2020.4 a default head shaking method was added, which moves the view when rolling fast on the ground. It's intensity may be aircraft defined and aircraft can also trigger this effect under other conditions. The currently implemented head shake effect is fighting this new default one during takeoff, causing excessive camera movement.
The old one should be removed / adapted to use the now included method.
In FlightGear 2020.4 a default head shaking method was added, which moves the view when rolling fast on the ground. It's intensity may be aircraft defined and aircraft can also trigger this effect under other conditions. The currently implemented head shake effect is fighting this new default one during takeoff, causing excessive camera movement. The old one should be removed / adapted to use the now included method.