There does appear to be a problem with the on-save action. Beyond this, as per Fedor’s original request, we’ll look at implementing the “remove unused import” action, irrespective of the linting setting.
Both these fixes will be prioritized for the CI 10 release, I’m afraid we’re a bit too far into the CI 9 endgame to put these in right now.
Apologies for the inconvenience caused and thank you for asking.