If you are looking at the Stress or Respiration widget, it will give you an option to press the start button, and the following text; "Relax and focus with a 5 minute breathwork activity?".
However, if you press OK it takes you to the 15 minute "Relax and Focus" session, NOT the "Relax and Focus (Short)" which is 5 minutes. I assume its just an error linking to the full session rather than the 5 minute short version as it says. Yes, a very small bug, but should also be easy to fix.
In an eveeeennnn smaller bug, if you go to start a breathwork activity in the normal way. Then select breathing technique; The 15 min Relax and focus is described as 16 minutes, and the short 5 minute version is described as 6 minutes. Seems inconsistent that it doesn't match description linking it from Stress / Respiration.
I hope fixing these massive issues does not affect the release date of the FR255!