Feb 13 PC Game Update Notes
-General stability improvements
-Fix for an issue where spawning into, or switching to, a gunner seat in an IFV/MBT sometimes could cause the game to crash
-Fix for missing sound in Team/Squad Deathmatch
-Fix for an issue in the Defuse game mode, where a bomb carrier would be permanently spotted
-Decreased the rate at which the kill card would incorrectly display 0 health, while the enemy was clearly alive
-Fixed an invisible wall that was incorrectly positioned in one of the fallen concrete pipes on Zavod 311
-Fix for an issue where bullet impact sounds weren’t properly matching the actual number of impacts
-Fix for an issue where the “Draw” message would not display on-screen once a Conquest round ended with both teams having the same amount of tickets
-Fix for an issue where long IDs wouldn’t scroll on dog tags
-Fix for missing grass physics in terrain

Mantle
-Fix for a crash that would occur when activating full screen in portrait mode
-Fix for stuttering that could appear during video sequences on multi-GPU PCs
-Fix for a memory system leak that could cause stalls, which would result in frames taking longer to process
-Reduced the amount of stalls that occurred when running with high graphics setting that require more GPU memory than is currently available
-Fixed screenshots on multi-GPU PCs

I think that's about it. I couldn't find the official list, but at least they fixed this stuff.

thanks...

ditto...

What about gunner seat in some vehicles not firing or having no ammo this happened to me several times

Thanks