I'm transcribing songs using BIAB, and I do that away from my instrument to practice my ears.

Sometimes I'm trying to guess a note and I need the Big Piano to make sure I'm hitting the correct note, but the problem is that I play a Bb tuned instrument. The Big Piano does not adjust to the visual transposition I set (if for example, I chose Soprano +2 from the list).

While this is OK as the workaround is just to simply imagine I'm playing a whole tone above the keyboard, but shouldn't the Big Piano follow the transposition by default?
(when playing the written song it displays the notes played as concert key regardless of my settings).