dotnet test doesn't work with our solution

[Friedrich von Never]

$ dotnet test
  PascalABC.NET.SDK -> W:\Projects\PascalABC.NET.SDK\PascalABC.NET.SDK\bin\Debug\net6.0\PascalABC.NET.SDK.dll
Starting test execution, please wait...
A total of 1 test files matched the specified pattern.
Testhost process exited with error: Error:
  An assembly specified in the application dependencies manifest (PascalABC.NET.SDK.TestFramework.deps.json) was not found:
    package: 'MedallionShell', version: '1.6.2'
    path: 'lib/netstandard2.0/MedallionShell.dll'
. Please check the diagnostic logs for more information.

Test Run Aborted.

At the same time, if we execute dotnet test separately for every test project (as it is done on CI currently), then it works.

I don't understand the issue, and it should be fixed.