That is how I would explain the desired action, and thank you for working on the PR (and Edward for raising it); I will try it shortly.
I would suggest that it is made a configurable option; as I mention I am sure I have seen something like this as a configurable option
in A.N.Other editor. I am trying to remember which. It may be that the new action is annoying to some.
It was probably connected with the idea of 'virtual space; whether you can navigate with the cursor beyond the end of text
in a node. Leo doesn't let you do this. Some editors do; then if you start adding characters, they fill the space between
the previous end of text in that node, and your current cursor position, with a combination of EOLs and spaces.
I see that Notepad++ has an 'enable scrolling beyond last line' option, which is probably similar. Note that
(I'm not requesting this feature for Leo...
Thanks, J^n