Have you ruled out that the MIDI note itself is not a long duration? Check in the piano roll.

One thing I'm not sure of: in the old (pre-2018) GUI, there was a Panic button to silence 'stuck' MIDI notes. I'm not sure if that's in the new GUI.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.