Describe the bug
The cmd line isn't able to display long commands.

Which version of Neovim are you using?
nvim 0.8

To Reproduce
Enter any suitably long Ex command and you'll not be able to see the end of it as the cursor gets hidden by the cmd line input width.

Expected Behavior
I think the cursor should be visible at all times and so the text near the beginning will 'scroll' out of view while we keep typing.

Screenshots