I have try according to the manual add one button control and space there are no pop up gui
but that work in the script console
I have test on the ignition version 8.1.0 and 8.1.7 have the same issue.
Are there any errors appearing in the ‘Output Console’ tool window?
Does autocomplete work in any other workspace (gateway, client event scripts, alarm notification pipelines, reporting script data sources, etc)?