When I use the Rectangular Grid tool to drag out a grid, pressing the up or right arrow key during the drag is supposed to increase the number of horizontal or vertical divisions by one, and the down or left arrow keys should decrease the number of divisions by one. The Polar Grid tool is supposed to behave in a similar manner. That isn’t happening for me.
When I press the up or right arrow keys, the number of divisions increases by a dozen or more — the exact number varies from one drag to the next.
Is this happening for anyone else? From here, it looks like a bug.
North America
Europe, Middle East and Africa
Asia Pacific