diff --git a/src/Build/BackEnd/Components/Logging/LoggingService.cs b/src/Build/BackEnd/Components/Logging/LoggingService.cs
index a96a169fb18..7f8aa44f50f 100644
--- a/src/Build/BackEnd/Components/Logging/LoggingService.cs
+++ b/src/Build/BackEnd/Components/Logging/LoggingService.cs
@@ -1170,10 +1170,11 @@ internal void InjectNonSerializedData(LogMessagePacket loggingPacket)
                 {
                     ErrorUtilities.VerifyThrow(_configCache.Value.HasConfiguration(projectStartedEventArgs.ProjectId), "Cannot find the project configuration while injecting non-serialized data from out-of-proc node.");
                     BuildRequestConfiguration buildRequestConfiguration = _configCache.Value[projectStartedEventArgs.ProjectId];
-                    if (!IncludeEvaluationPropertiesAndItems)
-                    {
-                        s_projectStartedEventArgsGlobalProperties.Value.SetValue(projectStartedEventArgs, buildRequestConfiguration.GlobalProperties.ToDictionary(), null);
-                    }
+
+                    // Always log GlobalProperties on ProjectStarted for compatibility.
+                    // There are loggers that depend on it being not-null and always set.
+                    // See https://github.com/dotnet/msbuild/issues/6341 for details.
+                    s_projectStartedEventArgsGlobalProperties.Value.SetValue(projectStartedEventArgs, buildRequestConfiguration.GlobalProperties.ToDictionary(), index: null);
 
                     s_projectStartedEventArgsToolsVersion.Value.SetValue(projectStartedEventArgs, buildRequestConfiguration.ToolsVersion, null);
                 }
diff --git a/src/Build/BackEnd/Components/Logging/LoggingServiceLogMethods.cs b/src/Build/BackEnd/Components/Logging/LoggingServiceLogMethods.cs
index 6dcf39925d2..4e104910a97 100644
--- a/src/Build/BackEnd/Components/Logging/LoggingServiceLogMethods.cs
+++ b/src/Build/BackEnd/Components/Logging/LoggingServiceLogMethods.cs
@@ -595,11 +595,9 @@ public BuildEventContext LogProjectStarted(BuildEventContext nodeBuildEventConte
                 ErrorUtilities.VerifyThrow(_configCache.Value.HasConfiguration(projectInstanceId), "Cannot find the project configuration while injecting non-serialized data from out-of-proc node.");
                 var buildRequestConfiguration = _configCache.Value[projectInstanceId];
 
-                IDictionary<string, string> globalProperties = null;
-                if (!IncludeEvaluationPropertiesAndItems)
-                {
-                    globalProperties = buildRequestConfiguration.GlobalProperties.ToDictionary();
-                }
+                // Always log GlobalProperties on ProjectStarted
+                // See https://github.com/dotnet/msbuild/issues/6341 for details
+                IDictionary<string, string> globalProperties = buildRequestConfiguration.GlobalProperties.ToDictionary();
 
                 var buildEvent = new ProjectStartedEventArgs
                     (
diff --git a/src/Build/Evaluation/Evaluator.cs b/src/Build/Evaluation/Evaluator.cs
index 3c88d31cf0e..fdc0ec6a0ec 100644
--- a/src/Build/Evaluation/Evaluator.cs
+++ b/src/Build/Evaluation/Evaluator.cs
@@ -785,11 +785,7 @@ private void Evaluate()
 
             if (this._evaluationLoggingContext.LoggingService.IncludeEvaluationPropertiesAndItems)
             {
-                if (_data.GlobalPropertiesDictionary.Count > 0)
-                {
-                    globalProperties = _data.GlobalPropertiesDictionary;
-                }
-
+                globalProperties = _data.GlobalPropertiesDictionary;
                 properties = _data.Properties;
                 items = _data.Items;
             }