@brentsimmons @manton so the issue appears to be the Micro.blog app(?)...at least on my machine. So when I share from NNW to MarsEdit, no problems, it opens MarsEdit, opens a new post and fills the entire post HTML. When I share to the Micro.blog app it opens the app and that's it. When I share again with the app open, then it fills the title and link in markdown.

My machine is older, it's a 2013/2014 MacBook Pro, so yeah maybe it is causing a problem, but it's not slower, it just doesn't appear.