Dorico Dynamics playback error

Dorico playback does not appear to take notice of any dynamics.
The expression maps were set to default, and then I did try turning on every option for dynamics. It plays the dynamics when I select the notes individually, though completely ignores them during playback.
It works (quite unreliably) with the demo scores.
I’m hoping its a user error …

Welcome to the forum, HughZS. Did you record your music live via real-time MIDI recording, or import it via a MIDI file? If so, you will be hearing the dynamics recorded in the original performance rather than the dynamics that you create using the Shift+D popover or the Dynamics panel in Write mode.