TraceDataFitering is not activated when LiveTrace is started from the Editor.

TraceDataFitering is not activated when LiveTrace is started. We can force it to be active by calling the following code. 

IUnrealInsightsModule& UnrealInsightsModule = FModuleManager::LoadModuleChecked<IUnrealInsightsModule>("TraceInsights");
UnrealInsightsModule.StartAnalysisForLastLiveSession(); 

1. Open the editor
2. Launch Unreal Insights (Select [Trace]->[Unreal Insights] )
3. Press [Start Tracing] button in
4. Open Trace Data Filtering (Select [Tools]>[Profile]>[Trace Data Filitering])

Then, Trace Data Filtering show "Trace Data Filtering requires a connected Live Trace Session."