Steps to reproduce:

• preferences -> auto subscribe -> yes
• submit -> someone else -> NovemBot
• decline
• reason: v
• tick notify user
• decline

What happens?

• https://en.wikipedia.org/w/index.php?title=User_talk:NovemBot&diff=prev&oldid=1220358700

What should happen instead?

• comment should be on User talk:Novem Linguae, not User talk:NovemBot
• the comment is invisible due to the redirect above it

Root cause

• The discussiontoolsedit API does not have a redirect: true parameter.
• Not an easy fix.