Не работает IntelliSense для C# в VScode под GNU\Linux

Расширение установлено, проект создан через dotnet 2.2.102. Monodevelop также установлен. Из логов OmniSharp понял, что он не может найти msbuilder. Нашёл, установил, но не помогло. Два дня пытаюсь найти решение, нагугленные решения не помогают, ни установка ранней версии плагина, ни переустановка VSC, ни установка MSBuilder. Ошибки те же, IntelliSense не работает. Вот логи от OmniSharp:

System.TypeLoadException: Could not load type of field 'OmniSharp.MSBuild.ProjectManager:_queue' (9) due to: Could not load file or assembly 'System.Threading.Tasks.Dataflow, Version=4.5.24.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
  at (wrapper managed-to-native) System.RuntimeTypeHandle.is_subclass_of(intptr,intptr)
  at System.RuntimeTypeHandle.IsSubclassOf (System.RuntimeType childType, System.RuntimeType baseType) [0x00016] in <f12ca6e34cfa434b9c747551ef070076>:0 
  at System.RuntimeType.IsSubclassOf (System.Type type) [0x00020] in <f12ca6e34cfa434b9c747551ef070076>:0 
  at System.RuntimeType.IsValueTypeImpl () [0x00026] in <f12ca6e34cfa434b9c747551ef070076>:0 
  at System.Type.get_IsValueType () [0x00000] in <f12ca6e34cfa434b9c747551ef070076>:0 
  at System.Type.get_IsClass () [0x0000b] in <f12ca6e34cfa434b9c747551ef070076>:0 
  at System.Composition.TypedParts.Discovery.TypeInspector.InspectTypeForPart (System.Reflection.TypeInfo type, System.Composition.TypedParts.Discovery.DiscoveredPart& part) [0x0000b] in <9aac21a4a3f24063b2b8b59143acddfc>:0 
  at System.Composition.TypedParts.TypedPartExportDescriptorProvider..ctor (System.Collections.Generic.IEnumerable`1[T] types, System.Composition.Convention.AttributedModelProvider attributeContext) [0x00037] in <9aac21a4a3f24063b2b8b59143acddfc>:0 
  at System.Composition.Hosting.ContainerConfiguration.CreateContainer () [0x00042] in <9aac21a4a3f24063b2b8b59143acddfc>:0 
  at OmniSharp.CompositionHostBuilder.Build () [0x00191] in <c01404811b784b23ba2b531f165478f7>:0 
  at OmniSharp.Stdio.Host..ctor (System.IO.TextReader input, OmniSharp.Stdio.Services.ISharedTextWriter writer, OmniSharp.IOmniSharpEnvironment environment, Microsoft.Extensions.Configuration.IConfiguration configuration, System.IServiceProvider serviceProvider, OmniSharp.CompositionHostBuilder compositionHostBuilder, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory, System.Threading.CancellationTokenSource cancellationTokenSource) [0x0007e] in <de2ffba991de4e9eafc3296817611843>:0 
  at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_0.<Main>b__1 () [0x00116] in <93ea459c1f92407098a355199aa33d94>:0 
  at OmniSharp.CommandLineApplication+<>c__DisplayClass11_0.<OnExecute>b__0 () [0x0000b] in <c01404811b784b23ba2b531f165478f7>:0 
  at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute (System.String[] args) [0x0035b] in <e56ebbc3ed87488b8e26736bbadaa5d3>:0 
  at OmniSharp.CommandLineApplication.Execute (System.Collections.Generic.IEnumerable`1[T] args) [0x00042] in <c01404811b784b23ba2b531f165478f7>:0 
  at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_1.<Main>b__0 () [0x00028] in <93ea459c1f92407098a355199aa33d94>:0 
  at OmniSharp.HostHelpers.Start (System.Func`1[TResult] action) [0x0001c] in <c01404811b784b23ba2b531f165478f7>:0