Changing the sides for a polygon and then dragging broken

[0HyperCube]

Steps to reproduce:

• Open the editor
• Select the polygon tool (pentagon icon on the left)
• Click in the "Sides" input at the top and type 6 (don't press enter or confirm)
• Start dragging a new polygon in the document.
• Observe how it only has 5 sides. Future polygons will have 6.