This worked for me:
Firstly, I selected 'Load song Demo', then I selected 'Play' (Using Current Chordsheet for song)
Then I muted the drums track as follows and it muted / un-muted (Solo'd as well)

Attached Files (Click to download or enlarge) (Only available when you are logged in)
2022-11-09_5-58-12.jpg (373.87 KB, 37 downloads)

BIAB & RB2026 Win.(Audiophile), Windows 10 Pro & Windows 11, Cakewalk Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Session Keys Grand S & Electric R, Kontakt, Focusrite 18i20, KetronSD2, NS40M, Pioneer Active Monitors.