It looks like GoodTask only automatically recognizes tags that are part of a quick action or a smart list. It would be cool if all tags of the form #abcd and @abcd, even if just part of a tag’s title or notes, could be automatically recognized. That way, when sorting a list by tag, as soon as you added a new tag to a task’s note, it would automatically pop up as a section in the list. This is simpler than having to manually add the tag to the list.
Thanks for the feedback. I'll keep it on the list to consider. Thanks!