When creating a new virtual machine and adding an additional network in the GUI, the cursor will jump to the end of the line with every keystroke after the / has been entered.  This doesn't become a problem unless you need to correct the IP address and then it is very frustrating.

4.15

On the cloud-init screen, click the check box to add network data.  Enter the Ethernet name, enter the IP addresses (192.168.0.10/24), move the cursor (using the arrow keys) to the left to correct any of the numbers in the IP address, and when you hit any key, it will move the cursor to the end of the line.

1.  Enter an IP address in the IP addresses field (i.e. 192.168.0.1/24)
2.  Use the left arrow key to move the cursor back to the left to change a number
3.  As soon as any key is pressed, the cursor will jump to the end of the line.  

This isn't a problem if you want to add a single number but if you hit the delete key to change a number the cursor jumps to the end of the line immediately when the delete key is pressed.  Or if you need to add two digits instead of just one.

Should the IP address not include the CIDR?  The documentation for adding a IP address using the CLI indicates to include it but I can't find any documentation on how to add using the GUI.