They're not waving aside transcript consistency with their protocol, near as I can tell. ("We believe that it is possible to provide transcript consistency while preserving an asynchronous orientation.")
mpOTR, on the other hand, only shows transcript consistency at the end of a group chat session. This does seem problematic.
Yes, per your quote, transcript consistency is discussed. But the discussion simply outlines problems with implementing it in their mobile use case — to my understanding the current version being offered to users doesn't have strong transcript consistency.
mpOTR, on the other hand, only shows transcript consistency at the end of a group chat session. This does seem problematic.