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Red OmniSharp flame icon in status bar with "OmniSharp process errored:" tooltip (1.16.1)

See original GitHub issue

Environment data

dotnet --info output:

.NET Core SDK (reflecting any global.json):
 Version:   2.1.402
 Commit:    3599f217f4

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.13
 OS Platform: Darwin
 RID:         osx.10.13-x64
 Base Path:   /usr/local/share/dotnet/sdk/2.1.402/

Host (useful for support):
  Version: 2.1.4
  Commit:  85255dde3e

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

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

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

VS Code version: 1.27.1 C# Extension version: 1.16.1

Steps to reproduce

Create a new project: dotnet new console
Open containing folder with Visual Studio Code
Observe that the OmniSharp Log appears in the OUTPUT pane and focuses itself automatically (happens every time I open a C# project since 1.16.0)
Observe that the OmniSharp flame icon in the taskbar is red instead of green
Mouse over the icon and observe “OmniSharp process errored:” tooltip
Observe that there are no errors in the output from step 3

Expected behavior

The extension should load normally without opening the OUTPUT pane in VS Code. The OmniSharp flame icon should be green as it was prior to version 1.16.0.

Actual behavior

Upon loading a C# project, the OUTPUT pane opens up with the message (this is with log level set to “debug”; usually I have it set to “critical” and it still focuses itself upon opening a project):

Starting OmniSharp server at 9/12/2018, 9:19:49 PM
    Target: /Users/zach/Desktop/OmniTest

OmniSharp server started with Mono 5.14.0.
    Path: /Users/zach/.vscode/extensions/ms-vscode.csharp-1.16.1/.omnisharp/1.32.5/omnisharp/OmniSharp.exe
    PID: 62698

[info]: OmniSharp.Stdio.Host
        Starting OmniSharp on MacOS 10.13.6 (x64)
[info]: OmniSharp.Services.DotNetCliService
        DotNetPath set to dotnet
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Located 2 MSBuild instance(s)
            1: Mono 15.0 - "/usr/local/Cellar/mono/5.14.0.177/lib/mono/msbuild/15.0/bin"
            2: StandAlone 15.0 - "/Users/zach/.vscode/extensions/ms-vscode.csharp-1.16.1/.omnisharp/1.32.5/omnisharp/msbuild/15.0/Bin"
[info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
        Registered MSBuild instance: Mono 15.0 - "/usr/local/Cellar/mono/5.14.0.177/lib/mono/msbuild/15.0/bin"
            CscToolPath = /Users/zach/.vscode/extensions/ms-vscode.csharp-1.16.1/.omnisharp/1.32.5/omnisharp/msbuild/15.0/Bin/Roslyn
            CscToolExe = csc.exe
[info]: OmniSharp.Cake.CakeProjectSystem
        Detecting Cake files in '/Users/zach/Desktop/OmniTest'.
[info]: OmniSharp.Cake.CakeProjectSystem
        Could not find any Cake files
[info]: OmniSharp.WorkspaceInitializer
        Project system 'OmniSharp.DotNet.DotNetProjectSystem' is disabled in the configuration.
[info]: OmniSharp.MSBuild.ProjectSystem
        No solution files found in '/Users/zach/Desktop/OmniTest'
[info]: OmniSharp.MSBuild.ProjectManager
        Queue project update for '/Users/zach/Desktop/OmniTest/OmniTest.csproj'
[info]: OmniSharp.Script.ScriptProjectSystem
        Detecting CSX files in '/Users/zach/Desktop/OmniTest'.
[info]: OmniSharp.Script.ScriptProjectSystem
        Could not find any CSX files
[info]: OmniSharp.WorkspaceInitializer
        Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpWorkspaceOptionsProvider
[info]: OmniSharp.WorkspaceInitializer
        Configuration finished.
[info]: OmniSharp.Stdio.Host
        Omnisharp server running using Stdio at location '/Users/zach/Desktop/OmniTest' on host 62678.
[info]: OmniSharp.MSBuild.ProjectManager
        Loading project: /Users/zach/Desktop/OmniTest/OmniTest.csproj
[info]: OmniSharp.MSBuild.ProjectManager
        Successfully loaded project file '/Users/zach/Desktop/OmniTest/OmniTest.csproj'.
[info]: OmniSharp.MSBuild.ProjectManager
        Adding project '/Users/zach/Desktop/OmniTest/OmniTest.csproj'
[info]: OmniSharp.MSBuild.ProjectManager
        Update project: OmniTest

and the OmniSharp flame icon in the status bar is red. The plugin features generally seem to work fine, though.