In the stable version of Arma Reforger, an armored vehicle consistently withstands incoming rounds when it is stationary. The armor glass and armor plates correctly absorb the impacts without being penetrated.
However, as soon as the vehicle starts moving, the same ammunition immediately penetrates the armor. This happens even though there is no visible damage or destruction of the armored glass beforehand.
The same behavior can also be reproduced on vanilla vehicles. The second video demonstrates the issue using the LAV-25.
In general, even if the character is enclosed inside a box made of colliders to rule out direct penetration, the issue still occurs in the same way.
The problem appears to be related specifically to vehicle movement. A possible cause may be a desynchronization between the vehicle’s world position and the character’s world position while the vehicle is moving.
Please refer to the attached videos for a detailed demonstration of the issue.