0001925: Notes are not properly released on a MOTU midi express 128 when OpenMPT is the only device accessing a port

ID	Project	Category	View Status	Date Submitted	Last Update

0001925	OpenMPT	Plugins / VST	public	2025-09-19 17:35	2025-09-19 17:35

Reporter	02FD	Assigned To
Priority	normal	Severity	minor	Reproducibility	random
Status	new	Resolution	open
Platform	x64	OS	Windows	OS Version	10
Product Version	OpenMPT 1.32.04.00 / libopenmpt 0.8.3 (current stable)

Summary	0001925: Notes are not properly released on a MOTU midi express 128 when OpenMPT is the only device accessing a port
Description	This is a weird one. Basically, notes refuse to release when the song is stopped. The more notes playing, the higher the chance, though it's pretty high by default. I don't know if it's because I'm on Windows 10 again, or if it's a driver-related issue, or if it's OpenMPT's fault at all. Preliminary testing appears to reveal that it isn't the case in other software, but it's hard to say when it happens so randomly. Also, as soon as I open anything else that uses the same MIDI port as OpenMPT (which this driver supports), it no longer happens. This includes monitoring software, so it's incredibly difficult to diagnose. I use a MOTU midi express 128.
Steps To Reproduce	Unsure.
Tags	No tags attached.

Has the bug occurred in previous versions?
Tested code revision (in case you know it)

Date Modified	Username	Field	Change
2025-09-19 17:35	02FD	New Issue