Keyboard input - Can't move forward and up at the same time

[csciguy8]

• Start any level in cesium-unreal-samples, Ex. 04_CesiumSublevels.
• Start PIE mode
• Press W to move forward
• While moving forward, press E to go up.

Notice you are going up, but your forward motion stopped.

Handling both these inputs at the same time would feel a little more user friendly. For example, forward and left simultaneously (W and A) works just fine.

Took a peek at the cesium-unreal project assets and didn't see anything obvious that was causing this. This behavior might be part of the engine.