Get Random Point in Navigable Radius Returning Invalid Value

When using the Get Random Point in Navigable Radius node, every few points return an invalid value.

Found in 4.11.2 binary. Reproduced in 4.12 Preview 2, 4.10.4 binary, and Main CL 2962354

1. Open the editor (ThirdPersonProject)
2. Add a Nav Mesh Bounds Volume
3. Open the ThirdPersonCharacter blueprint
4. Recreate the setup in the attached image
5. PIE

Result: Notice that X=340282346638528859811704183484516925440.000 Y=340282346638528859811704183484516925440.000 Z=340282346638528859811704183484516925440.000
is returned every few times the event is fired off.

Expected: Only valid values would be returned.