Planning Mode: Undo button clicks have no effect

Citybound v0.1.2-822-g33769a7 Windows 10, Chrome Version 80.0.3987.132 (Official Build) (64-bit)

In Planning Mode, clicking the road icon to start a new road. Clicked on map at least 1 time to place a road node (multiple road nodes are present on the road). Clicking on the Undo button while in road placement mode has no effect.

In Planning Mode, clicking the road icon to start another new road. Second road is in the same view as first road, and there is no intersection between the roads shown in planning mode. Clicked on map several times to complete layout of a road (within the original view). Double-clicking on last road node to finish road. Clicking on the Undo button after finishing road placement mode has no effect.