OmniSharp cannot handle multiple csproj files in one directory

[fishfood34]

Issue Description

.sln files have .csproj projects added to them, but instead of running

cd <Path to folder containing .csproj>
dotnet restore <filename>.csproj

it appears to be running

cd <Path to folder containing .csproj>
dotnet restore

Steps to Reproduce

1. Create a directory with more than one .csproj file
2. Create a .sln file that inclues one of those .csproj files
3. Configure omni shart to use that .sln file
4. Open VSCode such that it will run omnisharp using that .sln file

Expected Behavior

OmniSharp runs dotnet restore on the specific .csproj file that is in the .sln file

Actual Behavior

OmniShapr runs dotnet restore in the directory that contains both .csproj files throwing the following error:

MSBUILD : error MSB1011: Specify which project or solution file to use because this folder contains more than one project or solution file.
Done: 1.

Environment information

VSCode version: 1.39.1
C# Extension: 1.21.5

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 2.2.401 Commit: 729b316c13

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.14
OS Platform: Darwin
RID: osx.10.14-x64
Base Path: /usr/local/share/dotnet/sdk/2.2.401/

Host (useful for support):
Version: 2.2.6
Commit: 7dac9b1b51

.NET Core SDKs installed:
2.2.401 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.2.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.2.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.2.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
csharp	ms-vscode	1.21.5
dotenv	mikestead	1.0.1
dotnet-test-explorer	formulahendry	0.7.1
Go	ms-vscode	0.11.7
mssql	ms-mssql	1.6.0
python	ms-python	2019.10.41019
vscode-docker	ms-azuretools	0.8.1

[geekox86]

Greetings all. Thank you for wonderful extension.

Any update on this issue?

[cartermp]

Closing as fixed by #3617