Whatever files were released when this Tachanka rework was dropped on the main server, has brought back the audio bug again, where you have zero sound or it is reversed. This is an issue which has plagued siege as far back as 2018, and for a while, after Sam Fisher was added, it was fixed, but now the issue returns and it is worse than before. The fact that a bug that has been in the game since 2018 was fixed, then unfixed, in a game that relies so heavily on sounds. By a major game developer such as ubisoft shows how far their standards are falling.
Hello Lengthy-One, welcome to the forums.
Are you able to record a clip of this sound bug you are experiencing since the update and what game modes are they affecting you in? If you can provide us with any evidence and more information of when this affects you exactly, on what maps, in what game modes, with what operator, we will be able to pass this onto the QA team to reopen the investigation.