Following the 1.28 stable release, my helicopter mod (RedFalcon Flight System Heliz) throws these client-side errors for helicopter doors (inherited from CarDoor) when a heli comes into the player's network bubble. This doesn't happen for newly spawned helis that spawn into the network bubble or when a player spawns near the heli.
In game the player gets the open door prompt, but activating it (F) doesn't do anything.

REDFALCON, 05.06 2025 11:56:09
[ScriptInputUserData::CanStoreInputUserData] :: [WARNING] :: Max InputUserData reached: { 7,7,7,7 }
Class: 'CarDoor'
Entity id:2977572

Function: 'CombineItemsClient'
Stack trace:
scripts/4_World/entities\itembase.c:877 Function CombineItemsClient