It would be useful if we could save a function node without having to close the function editor. Currently we must press Done which closes the function editor.
We might have a function node sandwiched between an inject node and a debug node
We wish to check the output to ensure our function correct.
Currently we are slowed down by repeatedly closing and opening the function editor to check the debug output.
Perhaps this would be smoother if they worked as follows:
When the function node editor was visible, this wouldn't disable the flow editor (showing the other nodes)
If a change was made in the function editor, then the flow editor could be disabled.
When the function in the function editor was saved (via a button or some other means), the flow editor would be re-enabled.