Nodes impacted by code changes do not generate warnings after HotReload

I noticed this while executing https://jira.it.epicgames.net/browse/UEQATC-1441. At step 10, there should be warnings on the nodes that were updated by the HotReload.

This is a regression from 4.13.2. I checked 4.13.2 binary @ CL 3165739.

Repro:

1. Create a BasicCode project.
2. Create a new C++ class based on Actor (named mine FooCPP)
3. Create a BP class based on the C++ class you created (named mine FooBP)
4. In VS, add the following code to the public section in the FooCPP.h file:

   UPROPERTY(Category = ThingsAndStuff, BlueprintReadWrite, EditAnywhere) float fooVariable;

5. Click the Compile button on the Toolbar in UE4Editor.
6. Open the BP class in the Blueprints subeditor.
7. Place a get and a set node for fooVariable into the Event Graph.
8. Switch back to VS and change the line of code added to:

   UPROPERTY(Category = ThingsAndStuff, BlueprintReadWrite, EditAnywhere) float fooVar = 3.0f;

9. Switch back to UE4Editor and click the Compile button.
10. Focus back to the Event Graph and the get/set nodes that were placed.

Result:
There are no warnings generated on the nodes that were impacted by the Hotreload.

Expected:
Warnings are generated on the nodes impacted by the HotReload.

Frequency:
100%