After upgrade from net6 preview 7 to rc1, build project which is created with net6 preview 7 with error "C:\Users\v-danche\RC1\before\myconsole\Program.cs(2,1): error CS0103: The name 'Console' does not exist in the current context [C:\Users\v-danche\RC1\before\myconsole\myconsole.csproj]"

[vdanche]

Environment:
Windows10
Repro steps
1.Install net6 preview 7 SDK(https://dotnet.microsoft.com/download/dotnet/6.0).
2. Run dotnet new console -o myconsole to create console app.
3. Install the latest net6 rc1--6.0.100-rc.1.21430.44(runtime-6.0.0-rc.1.21430.11) to upgrade.
dotnet build "myconsole" project
We got below error

Note: we can build successfully with below workarounds.
Workaround1
Add <ImplicitUsings>enable</ImplicitUsings> to myconsole.csproj file

or
Workaround2
Use the old template in program.cs

[KalleOlaviNiemitalo]

I think this is by design because implicit usings were disabled by default per #19521, after having been enabled by default in 6.0 preview 7 only. If you were upgrading from 5.0.* or 6.0 preview 6, the problem would not occur.

[vdanche]

close it by design