Smoke Ammo sound missing

[Cross]

Just noticed that when my inf use a smoke grenade, smoke just instantly appears and there's no 'smoke grenade explosion' sound, like there used to be.

I tried using an artillery fired smoke round and same thing: smoke instantly appears in the target hex, but there's no sound of the round being fired and the short delay between shot and round hitting. Other "Z" fire works as normal.

Is this a known issue?

I have ver. 1.1bCD

Cheers,
Simon