Header removals wait for the code editor to be left: autosave saves with drop=false, so follow_header adds and renames from the header but keeps a port or setting whose parameter is gone, and leaving the editor (blur or closing the panel) saves once more with removals; source saves of a flow run one at a time

docs/code/nodes.md

@@ -41,9 +41,10 @@ settings are kept in step, in both directions.
 - Saving the code reads that line back. A name the node already has keeps
   its kind. A new parameter becomes a setting when it has a default, which
   becomes its value, or when it comes after a setting. Any other new
-  parameter becomes an input port. Removing a parameter removes its port or
-  setting, and renaming a single one renames the port (keeping its message)
-  or the setting (keeping its value).
+  parameter becomes an input port. Renaming a single one renames the port
+  (keeping its message) or the setting (keeping its value). Removing a
+  parameter removes its port or setting once you leave the editor, so one
+  deleted mid-edit and typed back keeps its message.
 - Shared code, code from `fluksio sync`, and a header with a decorator,
   `*args`, `**kwargs`, a bare `*` or `/` are left alone in both directions.