Syntax highlighting breaks with newline in constructor

[JoeRobich]

Issue originally posted at https://github.com/dotnet/vscode-csharp/issues/4190

Issue Description

Syntax highlighting fails for methods after constructor if the parenthesis are moved to a new line.

Steps to Reproduce

1. Write a constructor with at least one parameter.
2. Now format it so the opening parenthesis is in the next line.
3. Now add a method after the constructor. åç

Expected Behavior

The lines after the constructor should have correct syntax highlighting.

Actual Behavior

All text is white.

Logs

OmniSharp log

Post the output from Output-->OmniSharp log here

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.50.1 C# Extension: 1.23.5

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 3.1.301 Commit: 7feb845744

Runtime Environment: OS Name: Windows OS Version: 10.0.18362 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\3.1.301\

Host (useful for support): Version: 3.1.5 Commit: 65cd789777

.NET Core SDKs installed: 2.1.201 [C:\Program Files\dotnet\sdk] 2.1.202 [C:\Program Files\dotnet\sdk] 2.1.502 [C:\Program Files\dotnet\sdk] 2.1.503 [C:\Program Files\dotnet\sdk] 2.1.505 [C:\Program Files\dotnet\sdk] 3.1.301 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.1.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

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

Visual Studio Code Extensions

Extension	Author	Version
atlascode	atlassian	2.8.3
cpptools	ms-vscode	1.1.0
csharp	ms-dotnettools	1.23.5
debugger-for-chrome	msjsdiag	4.12.11
docomment	k--kato	0.1.18
git-easy	bibhasdn	1.11.0
git-graph	mhutchie	1.27.0
gitlens	eamodio	10.2.3
hexeditor	ms-vscode	1.3.0
remote-wsl	ms-vscode-remote	0.50.1
vscode-drawio	hediet	1.0.3
vscode-eslint	dbaeumer	2.1.13
vscode-language-pack-es	MS-CEINTL	1.50.2
vscode-markdownlint	DavidAnson	0.37.2
vscode-yaml	redhat	0.12.0