Slightly odd one. I have output fixed at 100% for a couple of my players (PCP). I usually use material skin, which hides the volume control when it's set to 100%. However, I was in the classic skin today server:9000, and noticed that the displayed volume changes if I try and change it. The volume doesn't change, but the volume displayed does.
Running LMS 8.1.2.
Running LMS 8.1.2.