Right clicking an actor in the Viewport and using the Place Actor feature is broken on Linux

This happens on both Ubuntu 16.04 and Ubuntu 14.04.

Repro:

1. Create a new blank Blueprint project
2. Drag a Cube StaticMeshActor from the Modes panel into the Viewport (Modes > Basics > Cube)
3. Right click on the actor
4. Highlight "Place Actor"
5. Select "Point Light"

Result:
Nothing happens

Expected:
A point light is added to the Viewport and World Outliner relative to the actor you right clicked.