I would like to report 2 bugs wich are super boring, and being used by alot of players.
First one is while you're starting to plant a bomb, then you stop, the enemy can still hear you planting a bomb even after you've stopped the planting animation.
So players are abusing it to lure enemies in a way that is not supposed to be.
Second sound glitch I've been dealing with is while someone is running, holding shift or whatever is his running keybind, and taping W to go forward.
The result is that he's making no sound while he's kind of running, so he can silently move faster than if he was crouched.
When you can actually watch a team mate doing this, even the running visual animation is glitched, showing that something is really wrong here, and shouldn't be used that way.