this mode was removed in vain.
on the wave of novelty, 4vs4_FS of course became wildly popular, but over time (a year / a half) 4vs4_NS would inevitably begin to gain momentum. After all, the automatic game distributes teams more fairly and gives a variety of maps.

look at how they basically create lobby's in the global: 1-2 seton; 3-6 dual gap; at least 2 the pass; 10 astrocraters.
rarely will any streamer make canis or twin rivers or something no less hackneyed, but rare in comparison with astro and gap.

inevitably, people will look for a way out of this situation and will go to play 4vs4_NS

in general, in my opinion, they were very hasty with the removal.
they could have put a drop of effort into advertising this game mode.

which proton do you use? there is an unpleasant feature since version 4.x.x requires a running steam; if you open the RUN file there is a mention in the last lines "steam.exe "; if you do not run steam, then the emulation does not pass d3d does not work out such errors fly out.(well, or so I understood it)
of course, you can run steam for the test and if the problem is solved, simply edit the startup file eliminating the need for steam

at least your screenshots reminded me of exactly this problem that I once struggled with.

last 5 lines run file (proton 4.11)
SteamGameId="9420"
SteamAppId="9420"
WINEDLLOVERRIDES="mfplay=n;dxvk_config=n;d3d11=n;d3d10=n;d3d10core=n;d3d10_1=n"
STEAM_COMPAT_CLIENT_INSTALL_PATH="/home/user/.steam/debian-installation"
"/home/user/.steam/debian-installation/steamapps/common/Proton 4.11/dist/bin/wine" "${@:-${DEF_CMD[@]}}"

WINEDLLOVERRIDES="..." - must not contain arguments "steam"
STEAM_COMPAT_CLIENT_INSTALL_PATH="..." - must not contain "steam.exe" between words .../wine" and "${@:-${DEF_CMD[@]}}"

how can you release a patch that changes the key management of the game and not make announcements in the client's news feed?

I see a lot of questions in the chat that a lot of mods don't work, ACU doesn't listen!

all sorts of unnecessary shit there is full of weeks and where is the necessary information?

@blackops this question is provocative.
By playing games via steam, I accept the license agreement of this online store, including the policy regarding the distribution of personal data.

in the case of the FAF client, I don't remember where it says that the community will provide valve corporation with data on players who will analyze and profit from them there. (data science makes a good income when data flows like a river)
(this begs the question of what data, there is only the time spent in the game. I will answer you that with this, it is already possible to bring together the information received on Valve servers and identify connections between people, who is friends with whom, the gaming preferences of these groups, in general, analyze FAF users)

so far I see only these "rules" https://www.faforever.com/tos
and this policy https://faforever.com/privacy

there are no provisions that the community shares data with third parties in order for them to profit from this data.
although of course there are many dubious generalizations that can be interpreted in a legal context in any direction.
therefore, as I wrote above, it would not be bad to get clear explanations for what purposes this is being implemented.

такой вопрос требует как минимум назвать ОС и ее предустановленные языки;
добавить ясности в плане: небыло ли в последнее время проведено мероприятий по ее кастомизации(изменения шрифта их рамеров)

в качестве движения в сторону решения вопроса я на вашем месте провел бы эксперимент по переключению локализации(смене языка) в клиенте ФАФ английский.
для этого нужно в папке с клиентом".faforever" найти файл client.prefs и в нем найти:
"localization" : {
"language" : "ru",
"dateFormat" : "AUTO"
},
изменить "language" : "en_US",

запустить клиент и посмотреть что будет отображаться с включенной латиницей.
Если появится что то вменяемое, попробовать переключить обратно.
Должен предупредить что строка "language" : "ru", может отсутствовать(вероятно клиент автоматом смотрит язык системы при запуске и возможно проблема именно с этим...)
Разумеется если у вас в системе иные локализации то используйте шифры нужного языка, либо воспользуйтесь приведенными выше для проверки моей теории.