Where the omnisharp log in VSCode?

[ProgrammingLife]

I opened my project from Unity3D it installed all plugins successfully. Looks like omnisharp was installed too.
Autocompletion works fine. I see all the Unity3D hints for functions and methods.

$ find ~/.vscode/extensions/ -iname 'ms-*' 
/home/user/.vscode/extensions/ms-dotnettools.vscode-dotnet-runtime-2.1.6
/home/user/.vscode/extensions/ms-dotnettools.csdevkit-1.10.18-linux-x64
/home/user/.vscode/extensions/ms-dotnettools.csharp-2.45.25-linux-x64

When I look at dropdown list placed in Output tab, there's no anything that associated with Omnisharp name. That's the first problem. And the second one is ignoring omnisharp formatting settings by Omnisharp which were placed here:

~/.omnisharp/omnisharp.json
<project>/omnisharp.json
<project>/.editorconfig

All files with the same contents. No one of those file worked.

Tried to change "omnisharp.enableEditorConfigSupport" - nothing works. And I even don't see the logs again.
In my vscode settings.json I have settings:

	"omnisharp.loggingLevel": "debug",

	"razor.format.enable": true,
	"csharp.format.enable": true,
	"omnisharp.useModernNet": false,
	"omnisharp.monoPath": "/usr/bin/mono",
	"omnisharp.enableEditorConfigSupport": false,
	"omnisharp.useEditorFormattingSettings": true

Even if I press: ctrl+shift+p looking for restart omnisharp - I don't even see anything associated with omnisharp text.

All my extenions:

$ ls -1 ~/.vscode/extensions/ 
airyshift.spaces-inside-braces-0.4.0/
extensions.json
ms-dotnettools.csdevkit-1.10.18-linux-x64/
ms-dotnettools.csharp-2.45.25-linux-x64/
ms-dotnettools.vscode-dotnet-runtime-2.1.6/
rokoroku.vscode-theme-darcula-1.2.3/
visualstudiotoolsforunity.vstuc-1.0.4/

$ dotnet --version
8.0.108

$ mono --version
Mono JIT compiler version 6.12.0 (makepkg/0cbf0e290c3 Sat Mar  9 11:37:33 UTC 2024)

In the Output tab -> "C#" I see such logs:

Using dotnet configured on PATH
Dotnet path: /usr/share/dotnet/dotnet
Activating C# + C# Dev Kit...
waiting for named pipe information from server...
[stdout] {"pipeName":"/tmp/854d4bc4.sock"}
received named pipe information from server
attempting to connect client to server...
client has connected to server
[Info  - 1:58:27 PM] [Program] Language server initialized
[Info  - 1:58:31 PM] [WorkspaceProjectFactoryService] Project /home/user/projects/unity/MyFirstTry_3d/Assembly-CSharp.csproj loaded by C# Dev Kit

What steps should I check to find out what went wrong?

Arch Linux, VSCode 1.93.1, Unity3D 6 Preview.