"Import arguments" button for Workflow activity doesn't work anymore

Yes, we had a note under System 24.10.0 release notes:

  • The Invoke Workflow File activity now offers the same user experience and configuration properties for both Windows and Cross-platform projects. Plus, it introduces several new properties to simplify arguments handling and setting up execution.

But that was clearly far from visible enough (plus the experience was still a bit confusing, as evidenced by this topic).

But the release notes for System 24.10.6 now explain this much better: