I see there’s a bug in there if you completely remove the Include Tags: line, but it seems to work correctly for me if I just delete all associated tags, but keep that line.
Like this:
This is a configuration outline. Use it to store tags that you want to show (or always exclude) in the sidebar for all TaskPaper documents.
Include Tags:
Exclude Tags: @search
Then by default I see nothing under tags… but if I include tags in my document they all show up correctly.
Ahh I think I figured it out. When trying to recreate your setup I found out that if you have any trailing spaces after “Include Tags:” then only the @weak tag will show. I bet you’ve got some spaces there, delete them and I think it should work… definitely a bug, but not one I’m likely to fix in the near term.