Weird behaviour all the time...

[AndiRudi]

Issue Description

Since a couple of weeks/month I have quite some issues working with vscode on our .net core / .net projects. We have multiple smaller microservices and one larger monolith. It actually does not make much difference which project I open, Omnisharp behaves weird and usually I need to work blindly. Here are some of my findings:

• The first one is, that it takes a minute or so to load intellisense. e.g. after pressing the dot (like in System.) when usually the popup should come in a second or so
• When I switch to another class and change something the change is often not recognized in other files. I need to restart Omnisharp but then it also takes minutes until it scanned all files
• When I add something it usually is not known to intellisense for quite a while or until Omnisharp is restarted
• Sometimes weird things happen see screenshot where I just changed some code and the code is correct and the errors reported are not correct and also it looks like the memory slipped :)

I want to add that I have those issues on different machines (iMac and MacBookPro). Also colleagues report similar issues. I'm happy to assist finding the issues (if not already known)

Steps to Reproduce

I do not have explicit steps. It just happens all over the place while coding

Expected Behavior

Intellisense to be stable and fast

Actual Behavior

Intellisense not stable and slow

Logs

OmniSharp log

Post the output from Output-->OmniSharp log here

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.53.2 C# Extension: 1.23.9

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET SDK (reflecting any global.json): Version: 5.0.103 Commit: 72dec52dbd Runtime Environment: OS Name: Mac OS X OS Version: 11.0 OS Platform: Darwin RID: osx.11.0-x64 Base Path: /usr/local/share/dotnet/sdk/5.0.103/ Host (useful for support): Version: 5.0.3 Commit: c636bbdc8a .NET SDKs installed: 3.1.404 [/usr/local/share/dotnet/sdk] 3.1.405 [/usr/local/share/dotnet/sdk] 3.1.406 [/usr/local/share/dotnet/sdk] 5.0.100 [/usr/local/share/dotnet/sdk] 5.0.101 [/usr/local/share/dotnet/sdk] 5.0.102 [/usr/local/share/dotnet/sdk] 5.0.103 [/usr/local/share/dotnet/sdk] .NET runtimes installed: Microsoft.AspNetCore.App 3.1.10 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.11 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.12 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.3 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 3.1.10 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.11 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.12 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.3 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] To install additional .NET runtimes or SDKs: https://aka.ms/dotnet-download

Visual Studio Code Extensions

|Extension|Author|Version| |---|---|---| |add-reference|adrianwilczynski|1.0.2| |auto-using|Fudge|0.7.15| |cpptools|ms-vscode|1.2.1| |csharp|ms-dotnettools|1.23.9| |dotnet-test-explorer|formulahendry|0.7.5| |gitlens|eamodio|11.2.1| |HTMLHint|mkaufman|0.10.0| |java|redhat|0.75.0| |jupyter|ms-toolsai|2021.2.576440691| |lit-html|bierner|1.11.1| |material-icon-theme|PKief|4.5.0| |msbuild-project-tools|tintoy|0.3.14| |night-owl|sdras|2.0.0| |nuget-reverse-package-search|jesschadwick|0.1.68| |theme-bluloco-light|uloco|3.3.4| |tizentv|tizensdk|1.2.2| |vscode-docker|ms-azuretools|1.10.0| |vscode-drawio|hediet|1.3.0| |vscode-java-pack|vscjava|0.12.1| |vscode-java-test|vscjava|0.28.0| |vscode-markdownlint|DavidAnson|0.39.0| |vscode-nuget-gallery|patcx|0.0.24| |vscode-nuget-package-manager-improved|maxbrister|2.1.0| |vscode-xml|redhat|0.15.0| |vscode-yaml|redhat|0.15.0|;

[rupe120]

I just opened a project that was mostly working yesterday, minus one possibly related issue. Today I open it to find all sorts of misidentified issues

This is on a VM that I just created yesterday.

[DiegoGFritz]

I have the same issue. This occurs many, many times while I'm coding VSCode version: 1.54.2 C# extension: 1.23.9 OS version: Windows 10 20H2

[SirIntruder]

I've seen this recently on a Unity project/windows, and I have a hunch it was related to pulling git changes on a file that was not currently active.

[JoeRobich]

There have been lots of improvements since this issue was opened. Please open a new issue with logs if you are still running into this.