Please dont ignore that ticket, no doubt it should be threated as highest priority after Tanoa.

If someone still have some doubts its ruining gameplay and realism, try to play this mission (and try to nod die beacuse of "shooting grass"
https://steamcommunity.com/sharedfiles/filedetails/?id=343909257
Enemy have only helmet above grass (even half of it) and he still sees you perfectly, while you cannot see them). Its custom map, but it happen on vanilla AFTER YOU BEING DETECTED. There is no way to hide back in grass after enemy detect you - he will allways see you.

This is an existing problem according to me. This disturbs me very much! The enemy can easily shoot down me, but I do not see him! I solved this problem in such a way that I put the quality of the Terrain onto low and there is not grass so.
This is not a solution however!

@adam520 , yeah, and then youjust saw rocks, fences in the air over 500M..... Please, developers, fix this, game is very unplayable beacuse of this. Adding to config grass AS VEGETATION would help. Custom terrain makers would just create mini configs with adding their type grass to it.

Hey, thank you for the report!
That particular spot has grass cover layer (layer above ground that blocks AI vision) approximated to only 0.03 height. Elsewhere the same surface goes to 0.1, which more or less reflects the actual visual state, meaning this situation shouldn't happen that often.

Will get back to you once I have more info whether the approximation can be improved

Thanks for looking into it!

ai behavior depends on unitpos -> https://streamable.com/08b9q

So there is no any layer?

Any update on this issue? As a mainly singleplayer/scenario player this bug is gamebreaking and denies many situations. Despite it being my favourite game, I've sadly decided to stop playing Arma 3 until it's resolved.