runtime: net7 - Build freezes when publishing trimmed app with net6+ class libraries

I have a sln which contains several class libraries and one executable cmdline csproj. I’m modernizing whole solution, removing mono/net461 executable, upgrading class libraries from netstandard20 to net7. When publishing my app with parameters:

dotnet publish my.csproj -r linux-arm -p:PublishTrimmed=True -p:TrimMode=partial --self-contained true -c Release -f net7.0

and one specific csproj of my class libraries is set to net7.0 build freezes. on line C:\Program Files\dotnet\dotnet.exe exec "C:\Program Files\dotnet\sdk\7.0.101\Roslyn\bincore\csc.dll" ... Freezing means than NET host process takes almost all cpu, a several Gigs of RAM.

To “unfreeze” build I have to:

• remove trimming ( -p:PublishTrimmed=True -p:TrimMode=partial ) - without trimming build is completed in 20sec
• set this one library to netstandard20 and build with net7 SDK
• set all csproj files in solution to net6 and build in net6 SDK - net6 build completes in about a minute without problems

Building it on Windows 10,11 and in linux docker.

What I’ve tried and didn’t help:

• build with MS net7 SDK docker
• build for different runtimes - linux-x64, win-x64, linux-arm…
• SDK 7.0.100 and 7.0.101

Unfortunately project is closed source. But I can run some test, access my desktop remotely or something like that.