Keep creating .sln file for dotnet solutions

[dibarbet]

Originally filed by @erdembayar at dotnet/vscode-csharp#8870

I migrated my dotnet solutions to the latest .slnx format and removed the .sln file, but VSCode keeps recreating it. This is becoming quite frustrating. Could it just use slnx format?
See more https://devblogs.microsoft.com/dotnet/introducing-slnx-support-dotnet-cli/

I use latest C# extensions and VSCode version.

[erdembayar]

By the way VS IDE doesn't have same issue.

[claudiaregio]

@erdembayar Could you check your settings and see if you have this enabled? "Dotnet: Automatically Create Solution in Workspace". If you have this enabled, could you check if it still happens with the setting turned off?

Additionally, could you please provide the versions of the extensions that you are using?