Tanks are drowning in water when they are auto routed via the "new route" commands and they have to cross bridges. This was the case in 3.028 and it is still the case in 4.0.
( I assign a new route by tracing roads on the map while [shift] -key pressed down.)
This heavy bug makes all maps with bridges that have to be crossed, unusable for single player gaming. Player has to cross almost every vehicle personally, else vehicles drive into the water and get stuck or drowned.
Am I the only one experiencing this bottleneck?!