VS Code freezes debugging ASP.Net Core application

## Environment data
```
Version: Code 1.30.2 (61122f88f0bf01e2ac16bdb9e1bc4571755f5bd8, 2019-01-07T22:54:13.295Z)
OS Version: Windows_NT x64 10.0.15063
CPUs: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (4 x 2712)
Memory (System): 7.86GB (1.54GB free)
VM: 0%
Screen Reader: no
Process Argv:
GPU Status: 2d_canvas: enabled
checker_imaging: disabled_off
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
native_gpu_memory_buffers: disabled_software
rasterization: enabled
video_decode: enabled
video_encode: enabled
webgl: enabled
webgl2: enabled
CPU % Mem MB PID Process
0 68 16920 code main
0 115 17476 gpu-process
0 231 17896 window (XXXXX.html - XXXXX - Visual Studio Code)
0 47 13324 C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.debugger\vsdbg-ui.exe
0 6 9100 console-window-host (Windows internal process)
0 151 13712 "C:\Program Files\dotnet\dotnet.exe" C:\Users\XXXXX\Documents\Source\Repos\XXXXX\src\XXXXX\bin\Debug\netcoreapp2.1\P3Group.Daimler.Trucks.QPortal.dll
0 6 19140 "cmd" /c npm run start -- --port 50198
0 26 15884 electron_node npm-cli.js
0 6 17080 C:\Windows\system32\cmd.exe /d /s /c ng serve "--port" "50198"
0 506 1208 node "C:\Users\XXXXX\Documents\Source\Repos\XXXXX\src\XXXXX\ClientApp\node_modules\.bin\\..\@angular\cli\bin\ng" serve "--port" "50198"
0 175 17696 electron_node worker.js
0 21 17552 searchService
0 11 18084 electron-crash-reporter
0 14 18152 watcherService
0 6 18164 console-window-host (Windows internal process)
0 91 18216 extensionHost
0 31 17568 "C:\Users\XXXXX\AppData\Local\Programs\Microsoft VS Code\Code.exe" "c:\Users\XXXXX\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\html-language-features\server\dist\htmlServerMain" --node-ipc --clientProcessId=18216
0 29 19040 C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\rzls.exe -lsp --logLevel None
0 6 19108 console-window-host (Windows internal process)
0 5 19264 cmd /s /c "C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe -s c:\Users\XXXXX\Documents\Source\Repos\XXXXX\XXXXX.sln --hostPID 18216 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4"
0 6 19292 console-window-host (Windows internal process)
0 93 19336 C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.omnisharp\1.32.8\OmniSharp.exe -s c:\Users\XXXXX\Documents\Source\Repos\XXXXX\XXXXX.sln --hostPID 18216 --stdio DotNet:enablePackageRestore=false --encoding utf-8 --loglevel information --plugin C:\Users\XXXXX\.vscode\extensions\ms-vscode.csharp-1.17.1\.razor\OmniSharpPlugin\Microsoft.AspNetCore.Razor.OmniSharpPlugin.dll formattingOptions:useTabs=false formattingOptions:tabSize=4 formattingOptions:indentationSize=4
0 61 18268 shared-process
Workspace Stats:
| Window (XXXXX.html - XXXXX - Visual Studio Code)
| Folder (XXXXX): 2989 files
| File types: js(943) dll(280) scss(232) html(178) md(175) cs(162)
| json(134) css(130) map(99) png(98)
| Conf files: package.json(23) tsconfig.json(4) csproj(3) tslint.json(2)
| grunt.js(2) sln(1) launch.json(1) settings.json(1)
| tasks.json(1)
| Launch Configs: chrome coreclr

```
VS Code version: **1.30.2**
C# Extension version: **1.17.1**

## Problem
I am debugging a fairly simple ASP.Net Core application and it freezes the whole VS Code window. The system is still running smoothly. VS Code doesn't respond to clicks or keystrokes and I am not even able to abort the debugging session.

Looking at the environment data the freeze seems to come from the C# extension. I never had problems debugging this application before and a restart doesn't fix the problem either. Is there any other information I can attach to this bug report?