"Sitting on invalid seat" warning when I was being arrested.

it also happens when cop job we have to Chase suspect into blueberry its lag makes the car bug out and give the same error

So this was happend with me today. The prblm was internet sometimes internet stop working but nothing happen to our gameplay the onlything happen is our gameplay will not execute any command. Like /v.    /rpv etc etc.  So it's clearly internet issue nothing else. And if u sit in any veh the same message appears as shown in screenshot.

As mentioned above, this might be caused by lag.
-Invalid bug