.NET Core Host CPU 100%

[deyanp]

Describe the bug
I am experiencing 100% CPU used by .NET Core Host under VS Code with very small F# projects consisting of 5-10 fs files

To Reproduce
Steps to reproduce the behaviour:

1. Open VS Code with F# Project
2. Work a bit (1-5 minutes)
3. See 100% CPU usage in Windows Task Manager

Expected behaviour
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• OS: Windows 10
• Ionide version: 3.38.0
• VSCode version: 1.35.0
• dotnet SDK version: 2.2.300
• mono / .Net Framework version:

Additional context
Add any other context about the problem here.

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[deyanp]

these are the process' command line arguments, so it seems fsautocomplete.dll is working all the time on something?

"C:\Program Files\dotnet\dotnet.exe" C:\Users\Deyan.vscode\extensions\ionide.ionide-fsharp-3.38.0/bin_netcore/fsautocomplete.dll --mode http --port 8840 --hostPID=6424 20944

[deyanp]

Just to note that after updating package references to FSharp.Core 4.6.2 the issue seems to be gone ...