Since version 1.93.0, we’ve changed to a soft-deletion approach. If you archive a workflow, it will disappear from the normal workflow listing. You can swap your filters to show archived workflows and delete them there if you want to. For more information, check the release notes
Thank you, I already know how to operate it. However, I personally find the usage context of this feature a bit strange. I might prefer that only completed workflows, especially those that have passed testing, enter the archive state. But perhaps developers are more inclined to archive workflows that are still in testing or incomplete? Actually, this approach could also be managed with tags.