Landscape UI Elements are not visible

Per conversation between Gareth and Mike, it was determined the Landscape tool is in Game Mode by default.
Within the Landscape Tool, all UI elements are disabled by default. This has been observed affecting:

• Standard Editor Axis widget (bottom-left of the viewport)
• Mirror Tool Axis indiciators
• Spline Control Points / Segments

Workaround:
Press the "G" key (toggle Game Mode)

This issue is first observed occurring as of UE4/Main CL 3150232.

1. Sync QAGame to CL 3150232
2. Launch the Editor
3. Within the Modes panel, click the landscape tool
4. Check the bottom-left corner of the Viewport for the Axis indicator

Result:
Landscape UI elements are not visible

Expected Result:
All UI is consistently present at default settings

Frequency:
5/5