The message window neglects to show the vehicle appearance about what occurred before loading the game. (´・ω・｀)
Confirmation method：
(1) In the message window, click on the most recent vehicle information.
(https://i.imgur.com/Yov62Mv.png)
It's still sanity.
(2) Save the game and reload it.
(3) Click the same message from the message dialog.
(https://i.imgur.com/ZV4Y8WY.png)
It neglected to display the vehicle appearance.
The image is Extended's one, but I confirmed that standard has the same bug.
Not so easy to fix, since the image identification numbers could be different after reloading a game (if the pak set has changed for instance because now loading with addons or something was added). Or because the server runs on a different OS than the client and thus paks are loaded and registered in different order.