There used to be this thread about vertical view and a github page it refers to that says in order to enable it in my NodeRed installation I have to replace the file red.min.js with the one provided there
The problem is that in my current (07/2021) version of HomeAssistant with the latest NodeRed Addon version I can't find a file called red.min.js
hm, it seemed like so many users were interested in the vertical view UI. I find it unfortunate that it's discontinued because I it's sort of irritating for me to work with the horizontal one.
May try to get an old version of node-red for that