• it's a bug
• it's a missing feature
• it's a voluntary missing feature because do it is a bad idea
• i'm just stupid (an ergonomy/usability problem)
• it's a feature removed of the demo

Oh, 5 minutes later i've added one more inline comment.
I can edite/delete this one but not previous

Ok I can edit until I post the "call".

Later I can edit the call but not associated inline comment