Hello, as far as I know "holding breath" only gets activated if you are looking through the optics or iron sights of a weapon, binoculars or laser designator.

How do you imagine it should work?

How should the game know that you now don't want to hold breath while you are looking through the optics and using a key that is defined as "hold breath"?

How many buttons do you prefer to use if you want to lean left or right and holding the breath for a more accurate shot?

-"And "no", change of keybinding is not a solution :)"

Please don't get me wrong but I am afraid that is your own problem then.

I am not sure you understand a problem.

It generally should works like it works with exception if LShift+some_key is detected as pressed combination, "hold breath" (or other action - no matter) shouldn't be made if it's binded under LShift. What can i tell more?

Possible fix is to add some timer in function which detects keypressings to avoid of making double actions. I mean, there are possible combinations some_key+other_key. It means they must be somehow detected. This detection should be just more precise.
I suppose this can be reproduced also with other "alternation" keys.

To lean i use toggle mode. It means when i hold breath i use just "hold breath" key (one at the time).
I just claim keybinding execution is not so good as it seems to be.

Do you really consider it as not a bug? This isn't critical one of course (other side this is communication interace...) but i suppose it can be easily fixed.
I can add another one in this scope: "hold breath" doesn't work with combination 2x some_key.

Because of character of the game i have binded about 80% keys from keyboard and mouse (i don't mention about alternations) and OFTEN i use more than 50% from this. I have big problem with usefull binding of all activities. This is a real problem.
But not in this topic.

But please explain to me:

With your settings (left shift + W = lean left): How do you then additional want to "hold breath" if you are leaning while using optics? Wouldn't it be more simple to just choose another key for "holding breath"?

If I understand you correctly, you are still using the left shift key for "holding breath". But you don't want to hold breath if you lean left (or right) while pressing left shift + w

I know what you want to tell: a key combination (shift + W) creates a new function (leaning left) but disables all the single key functions (shift for "holding breath" and W for "moving forward").

Maybe you will find some supporters for your suggestion.

This is really simple matter (in fact i am suprised nobody discovered it earlier).

Here is detailed procedure with my expectations:
LShift = hold breath
LShift + W = lean left (toggle !!!)

I want ONLY to turn on lean left mode by single pressing LShift+W (after release, character should stay in this mode).
Nowadays: When I press LShift - I start hold breath, when I press W - I go into lean left mode. After release LShift+W I stay leaned and I stop hold breath.
Expectations: When I press LShift+W - I start lean mode. When I release LShift+W - nothing happen.

Problem is that additional activity is made (in this case it is holding breath, but it can be also in worst case trhowing a grenade).

Key word in this case is TOGGLE. I am absolutely agreed when it is not a toggle, then everything is OK. But I have TOGGLE in mind from the very beginning. I will undersore it in first post.

I am not sure what do you mean but in my opinion making of LShift+W doesn't disable separate LShift or W.

I hope now everything is clear.