diff --git a/.config/dotnet-tools.json b/.config/dotnet-tools.json
index d9f1e3985a..1f937e1837 100644
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "jetbrains.resharper.globaltools": {
-      "version": "2022.3.3",
+      "version": "2022.2.3",
       "commands": [
         "jb"
       ]
diff --git a/Directory.Build.props b/Directory.Build.props
index fccac79a45..734374c840 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <!-- Contains required properties for osu!framework projects. -->
 <Project>
   <PropertyGroup Label="C#">
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>10.0</LangVersion>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/osu.Game/osu.Game.csproj b/osu.Game/osu.Game.csproj
index bf0c1dde17..3ea4a57c2c 100644
--- a/osu.Game/osu.Game.csproj
+++ b/osu.Game/osu.Game.csproj
@@ -1,8 +1,9 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup Label="Project">
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <LangVersion>10</LangVersion>
   </PropertyGroup>
   <PropertyGroup Label="Nuget">
     <Title>osu!</Title>
diff --git a/osu.sln.DotSettings b/osu.sln.DotSettings
index 9ca0fad2ab..b54794cd6d 100644
--- a/osu.sln.DotSettings
+++ b/osu.sln.DotSettings
@@ -234,8 +234,6 @@
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=TooWideLocalVariableScope/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=TryCastAlwaysSucceeds/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UnassignedField_002EGlobal/@EntryIndexedValue">HINT</s:String>
-	<!-- UnknownProperty triggers false positives on $(MSBuildThisFileDirectory): https://youtrack.jetbrains.com/issue/RSRP-490368 -->
-	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UnknownProperty/@EntryIndexedValue">DO_NOT_SHOW</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UnnecessaryWhitespace/@EntryIndexedValue">WARNING</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UnusedAutoPropertyAccessor_002EGlobal/@EntryIndexedValue">HINT</s:String>
 	<s:String x:Key="/Default/CodeInspection/Highlighting/InspectionSeverities/=UnusedMemberHierarchy_002EGlobal/@EntryIndexedValue">HINT</s:String>