Regarding this empty flow view on Neo-pixel LED, heart beat. Help - #2 by Trying_to_learn and Idea: Add a node.js LTS check to Node-RED? - #3 by TotallyInformation they both render correctly when I run them flows in the source code version of the flow viewer
in fact, if I inspect these 2 demo flows they both have the <g>
node elements but something quirky is going on with the div scroll - certain zoom levels will allow the elements to show! Investigating.