The 'Add Movement Input' node no longer functions on a Default Pawn

The 'Add Movement Input' node no longer functions on a Default Pawn. This worked in 4.5.1 & 4.6.1.

1. Open QA-Game
2. Create a new bp > Search for the 'DefaultPawn' class
3. Open it > Add an 'Event Tick' node
4. Drag off & add a 'Add Movement Input' node
5. Set the X value for the World Direction to 1
6. Enable 'Force'
7. Compile & save
8. Back in the editor, add the bp to the level
9. Play-In-Editor

Results: The default pawn will not move

Expected: For the default pawn to move forward on the x-axis like it does in 4.5.1 and 4.6.1