"Running" forever for folder with multiple .NET Core projects

[renkun-ken]

Environment data

dotnet --info output:

.NET Command Line Tools (1.0.0-preview2-003121)                                                                                                                        

Product Information:                                                                                                                                                   
 Version:            1.0.0-preview2-003121                                                                                                                             
 Commit SHA-1 hash:  1e9d529bc5                                                                                                                                        

Runtime Environment:                                                                                                                                                   
 OS Name:     ubuntu                                                                                                                                                   
 OS Version:  16.04                                                                                                                                                    
 OS Platform: Linux                                                                                                                                                    
 RID:         ubuntu.16.04-x64

VS Code version: 1.4.0
C# Extension version: 1.4.0

I'm working in a folder where there are 3 .NET core projects, one shared library and two netcoreapp1.0. There are about 10-15 .cs files in each project. No project has warnings or errors.

When I'm editing in VSCode, the right-bottom corner shows the status of OmniSharp. When I choose a project, it works perfect. But when I choose the top level folder, the status shows "Running" forever and the log is:

Starting OmniSharp server at 8/30/2016, 5:50:05 PM
    Target: /home/renkun/Workspaces/monotrader

OmniSharp server started
    Path: /home/renkun/.vscode/extensions/ms-vscode.csharp-1.4.0/out/.omnisharp-coreclr/OmniSharp
    PID: 13597

OmniSharp: -s /home/renkun/Workspaces/monotrader --hostPID 10424 DotNet:enablePackageRestore=false --encoding utf-8 --stdio
[INFORMATION:OmniSharp.Startup] Omnisharp server running using Stdio at location '/home/renkun/Workspaces/monotrader' on host 10424.
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Initializing in /home/renkun/Workspaces/monotrader
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Auto package restore: False
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update workspace context
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Resolving projects references
[INFORMATION:OmniSharp#MSBuild] No solution files found in '/home/renkun/Workspaces/monotrader'
[INFORMATION:OmniSharp.Startup] Configuration finished.
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /projects: 200 44ms
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /currentfilemembersastree: 200 12ms

And it looks like OmniSharp is stuck at /projects or /currentfilemembersastree forever. No idea what causes this.

But when I create a fresh folder with multiple simple projects, there's no problem at all.